Timing belt off a tooth symptoms

Mark Cartwright
Is a tooth off bad? Please pictures: First picture: timing slack before removing timing tensioner, and before rotating crank clock-wise. They symptoms are, rough idle, hard starts, backfireing through the manifold, diesling (when you turn off the ignition and the motor timing being a tooth off is for timing belts/chains. Timing belt replacement should be conducted by a professional mechanic as it is an advanced project that requires one to disassemble the engine to be able to remove the old belt. This slipping causes the engine to jolt from the force of the timing belt teeth catching on the gears. Any - Diesel engine timing and temperature - Mr Soprano : Cam timing on Diesel engines critical due to closeness of valves and piston at tdc. The timing belt, timing belt tensioner, and fixed idler bearings contained in these kits are the same as DAYCO ® Timing Belt. The timing belt had worn away about 1/4 of the belt material. Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; Engine & Drivetrain; M20; If this is your first visit, be sure to check out the FAQ by clicking the link above. A rattling noise coming from the engine may show a seriously worn timing chain. i think it should be at the lower corner of the block on the pass side. When a belt starts to lose teeth it will make the timing belt slip. The timing belt skipped a tooth on the bank 2 intake cam. If the other plugs were fine and you have no reason to believe they are a different age, there may be some issue with that bank of cylinders. Most Audi and VW models should receive a timing belt replacement between 60,000 and 90,000 miles. what happens is that the timing is already off so the sensor is not picking up the correct signals. 5 mm deep. The major complaint when a belt is one tooth (verified) off is less power. It's commonly manufactured out of high-quality rubber with  26 Jul 2019 There are teeth on timing belts which grip gears as they're rotating various engine parts and components. What sort of symptoms will an engine exhibit when a belt is only one tooth off? I ask this because the engine is 100% smooth as silk, quiet, basically runs like a dream with no driveability issues whatsoever. My wife was driving to work when her car just cut off completely and she had it towed to an Independent Auto mechanic (ASE mechanics) where I had recently taken the car for a Brake job. I now get a bad engine vibration at idle and when backing up and pulling forward. Fortunately for us, changing the timing belt on a 2. Sometimes a belt will jump one or more teeth, throwing off cam timing. Some old school mechanics may tell you to replace the The tension of the toothed belt that drives an overhead camshaft must be checked at the intervals set by the servicing routine laid down in the car handbook. With the help of ProTorque, We've put together a list of problems and possible causes to help you identify the reason for timing belt failure. I would recommend a second opinion by a knowledgeable Toyota tech. It wasn’t that the installed tensioner failed. Replaced the timing belt when the motor was out, the marks didn't line up perfectly on the crank and the cam, but they were pretty close, it seemed almost like it was half a tooth off. The timing belt controls the action of the pistons and valves inside the engine cylinders to ensure the valves open in perfect time with the pistons. While it isn't impossible it is extremely unlikely that the timing belt jumped a tooth; they are rubber, toothed belts and if they fail they strip off the rubber teeth and the engine will not start. A typical timing belt will only cost between $25 and $50, but the repair takes at least a few hours. oneHOWTO shows you this by explaining how to check fuel pump injection timing. Belt length, width, tooth profile and pitch must be the same, and the material must be the same or better. 2. So I had the timing belt replaced, the water pump and the belt The timing chain tensioners had to be replace at less than 160,000 kms and after all the other little things that I had to do to it I pedalled it off to some other poor buggar, I ended up buying an older GMC that had 245,000 kms and I have had it for over 5 years now and it has a LS 5. The larger tooth size allows for a higher load carrying nature and accuracy is greatly improved. Sure enough I had the timing belt on wrong. I will dig in tomarrow and any words from you will be appreciated. Timing chains do not need to be replaced as often as timing belts, but they do tend to be more expensive to replace if they every need servicing. Like Tony Lewis, mine was off one tooth at the crank and would not start. Except, there isn't a mark on the oil pump housing for the crank pully. The snakelike timing belt on the side of the engine is essential for maintaining your car's performance. As long as you use some chicken wire going through the back of the cams to hold them steady, until you have the belt on. sbc chevy timing chains give around 100k to 130k if the factory used plastic gears, if steel gears are used they last The block was gouged about 4. Before starting a 2. The ECU uses this information for the fuel injectors “firing” sequence, thus the importance of an accurate reading. this means head off new valves head gasket and I also followed the instructions on replacing the timing belt. Of course now that you have gone to all this trouble to take the belt off for this examination you might just as well replace it. WHAT IS A TIMING BELT? i have a 87 nissan maxima and im pretty sure the belt has jumped a tooth what are the symptoms it still starts but runs real bad i was told it jumped a tooth can it So, I figure the timing belt must have slipped or something??? I just didn't know what to make of it, because the engine seems to run great. it tried to start and then went dead again. Timing marks a little off?? I have a 97 Subaru Impreza L, and I re-did the timing because I noticed it was 1/3 tooth off. (When the cam is set to TDC) After the Balancer was off and the lower timing belt cover removed there was a line on the crankshaft sprocket and a V cut on the belt protector. All timing belts stretch, and most of that stretch occurs about 15 minutes after installation. so my point is it can be 180 out, in my case anyway. Saving $100 bucks on non-OEM parts is not worth the $5000+ for an engine rebuild. Symptoms of a timing belt that has jumped/skipped a few teeth: One Tooth: It will idle like normal and the exhaust will sound fine but cruise and WOT the car will feel like you've got no power and in most cases will hesitate and misfire. In fact, if this is your first time doing the timing you might want to consder repeating the steps a few more times to confirm you get the same reading. Code P0300: Random/Multiple Cylinder Misfire Detected. There are multiple symptoms of a bad timing chain, but none of them is as obvious as a rattling that can be heard from the front of the engine, especially while the car is idling. This direct This happens because the firing sequence is retarded due to a chain that has jumped a tooth. Most Ford engines with overhead cam timing belts have a recommended replacement interval of 60,000 miles to 120,000 miles depending on the application (see the chart on page 54). When Should I Change My Timing Belt? Many car owners may wonder how often to replace a timing belt. Symptoms of a loose timing chain. I suspect it may be a tooth off. 3l engine that the previous owner had replaced the head gaskets after overheating the engine. thats done with so im thinking maybe timing belt. One of the more common symptoms of a worn timing chain is noise, especially on startup. Trying to check this rear camshaft will trip up many technicians as, when viewed in a mirror, the timing frequently appears off a tooth but is correct: Timing belts used to be a relatively ignored maintenance item by many drivers. Relieve tension on the Timing belt tensioner and then procede to remove the old belt. *OR* you install it "wrong," being one tooth off, and then once the tensioner is released and engine spun, then the lines match up nicely. The belt is designed for the running of an engine or a machine over the matching of tooth pulley Symptoms of timing being out by 1 tooth. The timing of the belt looks 1/4 tooth off due to the angle of the camera but is correct (compare the sprocket mark to the backing mark and belt mark to the sprocket mark). The labor cost to replace a timing belt can range from $200 – $900. 2 weeks ago it was around 175 each. Tensioners make sure the chain is tightly wound to the pulleys and gears. While not necessary on a belt driven system, a failed gear will cause a belt failure and, depending on your engine, could be very bad, so it's generally recommended to replace all idlers and gears in a belt system, too. Any more and I would have been rebuilding my motor all over again. When removing timing belt make marks on both camshaft and crankshaft that show the exact orientation then when reinstalling line those marks up. 1990 Geo Metro 1. Therefore, Rob Marshall advises that the outlay is both worthwhile and essential. It is a belt that connects your crankshaft to the pistons that move your engine, and allows your engine to sync up its movements - it’s named after the fact it syncs the opening and closing of your engine valves to the movements of the pistons. As the original owner I recently installed a Dayco timing belt water pump kit WP303K1A at its first recommended interval. id get a second opinion from another shop,but do not mention the whole timing belt thing. im about to pull the covers off and check timing marks. Yes there are some warning signs of bad timing belt that gives you red signal before time. Visually examine your timing belt drives for these top 6 failure-causing problems and it could help to prevent your drives grinding to a halt, avoiding unscheduled downtime. It comes in a 3. You don't need to drop the engine to reset the timing. A chain that has jumped two or more teeth may not start at all. Your engine's timing belt is the most important maintenance item in your car. just runs like doggy poopy, kinda nervous to leave the Fixing a bad timing belt. tried this several times, but would not stay running except for one time it trie *Update 5/1/19* - The VW timing chain settlement was approved by a judge last December. the A timing belt is usually a toothed belt, and a timing chain is a roller chain. Verify that your cambelts are installed correctly. $225. The timing belt rotates the engine’s cam and crankshaft in sync to ensure each cylinder fires at the right time. Refer to your shop manual that you should have regarding setting the timing properly. Check it also whenever you remove and refit the belt or the cylinder head. Timing belt failure comes in three flavors: stretching, worn teeth and snapping, generally in that order. I don't have any of the time tools yet, but it was visually evident that the cam slot was not perfectly parallel with the valve cover face and using a mirror I could see that the IP was not lining This being a Subaru (I've done extensive, think 7 years worth, of daily research on this vehicles), I'd say the timing belt is put on 1 or 2 teeth off how it's supposed to, the symptoms you explain sounds identical to those I've read about previously, where people have gotten it wrong. 3L, double-overhead camshaft engine is equipped with one timing chain for each camshaft and one drive chain for the oil pump. See here for a step-by-step guide on how to diagnose and fix check engine light code P0300. what are some/all of th effects of the timing belt being off a tooth or two. Symptoms of a Bad or Failing Timing Belt Tensioner . Slow to accelerate, slow to boost and it's lumpy at idle. Here are the main red  Discover how to check timing belt failure symptoms, their causes and the corrective actions to A broken timing belt can cause catastrophic engine damage, therefore it is vital to keep the timing belt in good operating condition. ) Why is it off and can I just switch out the timing belt on with that pulley off the mark? Timing Belt Broke – Now Runs Bad. If it jumps a tooth, or breaks entirely it can lead to permanent engine damage. As said earlier, independently of the Camshaft Position Sensor design (single tooth or multi-tooth) the Camshaft Position Sensor and Crankshaft Position Sensor signals are always compared and used together not only for fuel delivery but also for ignition timing and spark plug If the chain jumped a tooth you would get a crank/cam correlation code, it likely wouldn't be drivable because the ignition timing would be so far off. You can also remove the timing belt cover and check the belt, too. if you have any concerns on this let me know what are the symptoms of a turbo car jumping timing by 1 tooth? what are symptoms of running bad gas? Car idles fine, but it revs funny, like its missing. The 1. Tooth count and timing alignment markings are critical, ­especially on the VVT-i engines. Techno’s “Know your car” Series # 10 Mazda MX-5. 4. Exhaust and crank marks lined up The car was running odd like it was out of timing, idling rough and sputtering, pulled in the yard and shut it off intending to drive it to the repair shop the next morning, went to start it up and it sounded odd, like the engine was spinning way faster than it did before and would not start, took off the timing cover and there was a strip of cogs missing about eight inches long on the belt, I Look very closely at the root of each tooth where it meets up with the inside of the belt. This occurs when the timing belt skips a tooth on the camshaft due to being too loose or stretched. 4 V6 5VZFE WATER PUMP TIMING BELT KIT 15 PCS 4RUNNER TACOMA. Without removing the damper you have no way of seeing if all the marks line up. If I were to do it again, I would'nt bother turning the crank 50 degrees. He reported that it gave a lot more low end torque and power but that there were other problems. If the timing belt skips a tooth on the cam or crank gear, your valve and ignition timing will be retarded 9° (9° of timing per tooth). A timing chain will need replaced far less frequently than a timing belt, resulting in a lower cost to maintain the car for the owner. Overall, the timing belt makes sure the engine performs the best that it can by controlling the timing of the crankshaft and camshaft. Timing belts have teeth to grab onto the gears that rotate different parts of the engine. " work carried out,if the timing belt is out a tooth the car will run Symptoms Within a short period of time after belt replacement, the check engine light will come on. 99. Timing belts are used to synchronize the crankshaft with the camshaft, similar to a timing chain on an overhead valve (pushrod) engine. 3 IDI 101 or Timing is Everything by Brian Jordan (The Grampulator) I recently bought a 1992 F-250 with a 7. Also referred to as retarded ignition, the engine's start-up sequence will be off. 5L Isuzu Trooper that has just had its second DAYCO timing belt tensioner failure in 500 miles. then today started the car and heard a clonk bang sound so turned it off straight away turns out there was a piece of the old tensioner stuck behind the cam pulley so the bang was that shooting through Then re-set the belt which in the end is doing the job over. Trouble codes from the camshaft or crankshaft sensors, causing Check Engine Light to illuminate If timing is off by one tooth, does the car still idle smoothly? My 2000 LE idles very smoothly @600rPM and runs great, but it feels lack of acceleration than my friend's 1996 Camry LE 2. Note the speed at which the engine tries to start, comparing it with a normal start condition. Roberson says replacing a broken timing belt used to be common, but now he says most replacement jobs are for preventive maintenance. ™ INA Audi A3 Timing Belt Kits for 2. “People are a lot more aware of the timing belt, and the mechanics are educating drivers more about them,” Roberson says. got back in and tried to restart. Primary timing chain is just a tooth off the crankshaft key, while both of the camshaft matting marks matching perfectly to each its respective back timing cover. If this has happened, the engine may still run but valve timing will be retarded causing low compression and vacuum readings. 0 TSI timing chain tensioner recall, then the eEuro team is here for you! My experience: I had a failing belt tensioner (and it was a brand new OEM part less than 1 year old). FIXD explains symptoms, causes, and severity of code P0300. A lack of oil pressure means tensioners cannot immediately tighten the timing chains on startup. If you are unsure if you need a timing belt replaced, Toyota of Greenville can help. Just for your edification, I'll go into the what's what on timing on this page, but if you have zero interest in all of the complexities of ignition timing, why it's important to how well your engine is running, and why it can be disastrous if it's off, you should skip all of the tech talk and simply get out your manual to Note: Valve timing on a GL1000 is critical. I noticed when putting the belt on it was possible to get one tooth off if you just slip the belt on loosely then put the tensioner on. i looked at the t-belt through the cover and it looks very new, waterpump looks new too. ITS IMPOSSIBLE. ok so i had my car tuned about 3 months ago. If you believe that your timing belt is failing or broken, get your timing belt inspected by an ASE certified mechanic Unless the timing belt breaks, most car owners forget about the existence of the belt, let alone the need to replace it. 4l v6 and I need to remove the timing belt, but when I have the cam and crank pulleys at TDC, the crankshaft pulley isn’t on 0. When To Change The Timing Belt. Also check for clogged gear or chain lube drains. Hard to explain, sounds like a honda, not a deep throaty sound, but sounds ok the higher the rpms. Be careful to compare the replacement belt to the original for tooth count between the alignment markings, as even a half tooth might make you redo the job. WOW, someone had it exactly backwards, or 180 degrees off. So i did that and i was one tooth off on the cam pulley so i took the belt off and turned the cam pulley 1/2 turn to its mark and reinstalled the belt, turned the crank and it was perfect. Once a worn timing chain and it's components are replaced, the 22R series engine can go on for many thousands of miles of trouble free driving. 3 Aug 2017 If the timing cycle is off, fuel may not enter the cylinder or could escape through Faulty timing belt symptoms include a loss of power, loss of fuel If the timing belt shows any signs of cracks or worn out teeth, it really should . Symptoms of a Bad Timing Belt Since the timing belt is so critical to the operation of your vehicle, if you notice this warning sign, you should contact a mechanic as soon as possible. Benefits of Timing Chain Replacement. The old rule was every 60,000 miles. The best time to replace the belt is on your manufacturer's recommended change interval (usually between 50,000 and 100,000 miles), even if it looks in good condition. 56 (8% off) Although Hyundai uses a single timing belt on its 2. If the tensioner fails and the chain becomes loose, the timing of the engine is thrown off. Most OEM Honda Prelude timing belts are made of standard rubber. It runs like a car that needs tuning. Pull the plugs, let us know. so i One of the most common signs of a bad belt is when the engine jumps timing. Some cars are more prone to having valve damage when the timing is off. They are made from either plastic, metal, or a combination of synthetic materials. The most simple forms of timing belt designs are trapezoidal timing belts and round tooth timing belts. Pretty cut and dry. I have a registered VCDS but couldn't find the details on what symptoms would be. 1994 Toyota 4Runner V6 3VZE Timing Belt Replacment: For those non-Instructables members out there I highly recommend registering (its FREE) in order to view the other pictures I took while making this write-up. - Honda Tuning Yeah if you get a car's cam belt off a tooth or two they sometimes run/ idle great but fall on their face as you try to drive them. A belt that does not have alignment marks identical to the OE belt should not even be installed. One of the main components is the timing chain or belt. Too little spark advance will cause low power, bad gas mileage, backfiring, and poor performance. Get the crank pulley off, jack the car up and get it on axle stands. Gates GT2 Timing Belt Timing belt is a bendable and flexible belt that have teeth in its inner surface. It is critical that the timing belt be replaced on or before that mileage interval. The code indicates there is a timing issue. What would the actual symptoms be if one of the gears was off by a tooth? Anytime you take a timing cover off, take a quick look at the timing marks, then check for excessive backlash, gear or sprocket wear and belt or chain play. if it jumped a tooth, itll jump some more,and i doubt seriously it was 1 tooth off this whole time. Being off just one tooth is like throwing off your timing - idles like spit, but when you push some rpm's it'll run fine. as some sort of aid. A few symptoms:Car would not start, studdered and immediately died. I also need to replace my Corolla's timing belt when it reaches 60k miles. Symptoms of a Bad Timing Belt Shaking. If this timing is off, the engine will run erratically, if it runs at all. I did find that the crankshaft key was broken and ended up replacing the timing sprocket with that key, but I largely feel that I just wasted my time, because the new belt is also 1/3 tooth advanced. plugs looked a little rich when checked, and one cylinder being the darkest. I have been completely baffled as to why it does it but now I'm thinking that the timing belt is off a tooth or two. Best Answer: ok either you need a second opinion, or your timing belt jumped a tooth,unless for the last 31,000 the check engine light has been on. VW Polo 1. Do these symptoms seem familiar to anyone? the mechanic I took it to has determined the problem to be a 'skipped tooth on the timing chain'. The timing belt replacement cost is cheap compared to a new engine. Your six-year-old econobox is starting to show a bit of wear and tear, but Honda Civic Timing Belt was off Two Teeth. As for the camshaft, it is responsible for opening and closing the valves. You may have to register before you can post: click the register link above to proce The belt will strip the teeth at the crank if it jumps timing due to a loose belt. The “match marks” on the flywheel and the cam pulleys must align perfectly. Usually a bad roller will squeal before it will seize. . Thanks. mainly the tooth off is when your cam and crank aren't aligned properly. Interference engines can allow the valves to crash into the pistons when the timing belt breaks due to the engine’s timing being out of synchronization. The GL1000 is an interference design engine. Take the tensioner off your upper chain and try to pull enough slack to get the chain to skip teeth on any of the gears. It kept allowing my belt to skip a tooth or two. If it is off by one tooth, and a non-interference engine, it may run, but not well. for a quick timing double check turn the damper till the large scribe on its face points straight at the front timing belt and then check the cam marks. one tooth off on the crank is a lot and I doubt it would run. Sound familiar? A replacement belt and timing belt kit should fix that problem for you. • Water Pumps are designed and built for long lasting, efficient cooling. if the timing belt did jump a tooth what would the symptoms be,the reason i ask is my tensioner for the injector pump went a few days ago, we put in a new tensioner and all was good for 2 days. I've brought #1 to TDC and thought that would do it, but everything is 1/2 tooth off. 5L engine . It is important to remember that preventative maintenance is a much cheaper job than mandatory maintenance. The timing belt on my Passat has apparently jumped one or more teeth. You can then displace the steady bar and remove the engine mount, allowing access to the cam belt with the engine in situ. i was not able to run as much timing as the tuner had liked which made my dyno numbers really low, for the mods i have. I have a 98 T100 3. There are timing marks on the pulleys, and when you put the cogged belt back on you have to make sure the timing marks line up accurately. Manual Trans 162,000 mile CAN A TIMING BELT BEING OFF BY A TOOTH AFFECT COMPRESSION? I just replaced a timing belt on this car and now the compression is around 125psi on all cylinders. This happens because the firing sequence is retarded due to a chain that has jumped a tooth. Check the belt during routine maintenance and always ensure that the belt is changed at the manufacturer's recommended change intervals. Is my timing belt off a tooth or two? Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. If your belts are off by 1 tooth, your engine will run like crap. Top 6 Timing Belt Warning Signs. Here are some visual clues that your timing belt is in trouble: Teeth are worn down; Teeth are sheared off Would the timing belt being off by one tooth cause massive amounts of misfire at idle? Just got done rebuilding my head, and my car is idling extremely rough. 8 Turbocharged engine belt replacement is at 5 years or 75,000 miles, and the time factor is critical because of the high engine compartment temperatures. See here for a step-by-step guide on how to diagnose and fix Chevrolet check engine light code P0300. Yep, my manual reads line up the timing marks, install the belt then rotate the crankshaft two turns then tighting the idler to torque. I see lots of people  20 Jun 2019 The timing belt in your car is made out of tough rubber with grooves or teeth running along the inside edge. A timing belt has in recent history been the more commonly used part, but car makers are using a timing chain more often these days, as they find them to be more durable than belts. 7L V6 engines, its 3. If cam/crank timing is off make sure when you rerun the belt that the slack is on the tensioner side of the belt. Idle holds fine, the base timing was set at 13º btdc with the spout connector disconnected and the engine warmed to operating temp. A broken timing belt can cause catastrophic engine damage, therefore it is vital to keep the timing belt in good operating condition. 7 Tundra and when I went to spin it, it binded and snapped a couple valves. a nasioc member told me to check my timing gears to see if it was off a tooth and that it could be causing the problem. A timing belt, timing chain, or cambelt is a part of an internal combustion engine that synchronizes the rotation of the crankshaft and the camshaft(s) so that the engine's valves open and close at the proper times during each cylinder's intake and exhaust strokes. 58 degrees of timming. I took off the timing cover and put the balancer on the zero mark when I do this it looks like the timing mark on the cam pulley is one tooth off. he took offfense to it and told me that he Cylinder Compression Test. Transmission V-belts failures and breaks analysis How identify when your V-belt drive has a complication? Obvious warnings of a problem drive include important noise, vibration and heat; so a first checking involves looking, listening and touching. When changing T belt I always hand rotate the engine two full revolutions and check alignment. Whether the timing chain itself has stretched, or a tensioner isn’t doing its job, the result is the same. These timing belts are very easy to replace and if you are using an OEM Toyota timing belt, as we always recommend, the marks will be printed on the belt for you to line up. Will this Damage my Valves and Lifters? Had a mechanic do a recent water pump, timing and accessory belt change and car ran very poorly, loud tapping, whining, reving noises. 6 litre cars. what are the symptoms of a turbo car jumping timing by 1 tooth? what are symptoms of running bad gas? Car idles fine, but it revs funny, like its missing. It wasn’t easy getting the belt past the damper and I must have moved it without knowing. The Toyota MZFE engine is a transversely-mounted, timing-belt driven, 24-valve, dual overhead cam (DOHC) aluminum V6 design. An engine with a jumped timing chain will show signs of very sluggish and slow starting. The most serious symptom revolves around finding plastic chunks inside the oil pan. Advancing the cam timing in this manner would advance the cam by about 18 deg which is way too much and NOT RECOMMENDED. 9/7. Discussion in As you know i have had a lot of issues with my car and one of the main issues i have had is timing being SYMPTOMS OF INCORRECT IGNITION TIMING Symptoms of incorrect ignition timing are poor fuel economy, sluggish acceleration, hard starting, backfiring, or "pinging" or "spark knock". The car is not experiencing any other problems. High-mileage engines may need a new chain, gears or belt just as a safeguard, before timing failure sets in. The timing belt often drives the water pump as well and in these cases, it is highly recommended that the water pump be replaced at the same time that the timing belt is serviced. Although the timing belt can be costly to replace, it is a wise investment. The crankshaft end has a harmonic balancer that has the marks on it, there is a line on the lower timing belt cover that is about 1/2***8221; away from the TDC mark. Timing Belt Symptoms and Repair Tips September 30, 2016 By germanform Auto Info , Car Parts An often-overlooked factor in maintaining your vehicle’s engine and even when purchasing a new or used vehicle, is the timing belt . - Answered by a verified VW Mechanic. I want to know if there is a quick method of testing the timing before I got into the tensioner and timing belt? my cars running really poorly, replaced the head after an overheat. he took of the oil cap and asked me to turn it over again and told me the belt was on but may have slipped. Wrap the timing belt around the bottom of the water pump pulley, and draw it tight. On the drivers side cam pulley there's another mark, and I had it aligned with that mark. A bad timing belt can be a serious issue. I don't think there would be enough slack to jump a tooth, that type of approach may damage the T belt. What symptoms would be present if say the timing belt was installed incorrectly. Everything that comes in a timing belt kit was replaced, including the water pump. 0T 16 valve engine contain a preassembled INA timing belt BASE kit. Plugs are black, will be swapping them out. 5L is NOT a freewheeling engine. 1; the mechanic, despite being "very good" has not done up one of the nuts on one of the pulleys, or rollers. A timing belt is a toothed belt that connects the engine crankshaft to the camshaft or camshafts as you can see in the picture. Symptoms of a broken timing chain guide can range from a rattle noise on startup (not always) to rough idle to a check engine light. dont even have to jack it up or remove the tire. How to tell if it's the timing chain that prevents car from starting 7 Answers. you say you broke the timing belt just so you know theis engine is not free wheeling meaning that if it spins with no belt the pistons hit the valves so good luck Labor Operations: Click to display a list of Labor Operations associated with this procedure CAUTION: The 3. A loose belt can be result of high miles on belt, bad tensioner, bad water pump bushing or leaking coolant onto teeth and slipping, crank seal spewing oil onto the teeth. Keyway straight up to mark, timing mark on cam pulley straight up to mark. and yes, im speaking from experience :lol: I had the timing off on a 4. I don't know what type of truck you have, but if you tear into it do not forget to replace that tensioner. Grinding or roaring type noise from inside the timing cover; Belt may "jump time" (skipping a tooth or more, usually on the cam gear). When to change a timing belt. If the belt is off one tooth, the cylinder will be visibly out of sync with the mark. Ford overhead-camshaft engine On a Ford overhead camshaft engine A: Blower whine can be increased or decreased by tightening or loosening the blower belt tension. If the timing belt has broken inside, the engine will not be able to turn over or ignite. in the 4 cylinders where the distributor is run by the timing belt then yeah it being off will make for fun times get everything firing at the right point. What happens when this component gives up the ghost, and how hard is it to fix by yourself? A timing belt is the S4 / RS4 (B5 Platform) Discussion - If a timing belt is off by a tooth, what are the symptoms? - Noisier engine? Less power? Hesitation from a stop? Rougher idle? A bad timing belt or timing chain can be a serious issue. the symptoms you describe, low rpm bogging, etc, sound a lot like the way mine ran when I changed the timing belt and got it one tooth retarded. The dealer did the timing belt at the specified interval 105k. Is it possible for the car to still drive ok with the cam off by 2 teeth? I find it hard to believe that car would run at all. In fact the groove on the pulley is @ 1 1/8” before that (which is a little off of the chart. At first glance, a timing chain design allows engineers to shorten the overall length of the engine and reduce rotating friction. First you remove the intercooler and throttle body so that you can get the valve cover off, and then you remove the accessory belts, water pump pulley, and timing belt cover. 3 liter timing belt replacement, you might want to consider replacing the following parts also as you will access to them during this replacement: Radiator hoses, heater hoses, water pump, thermostat, crankshaft seal, timing belt tensioner, radiator or radiator flush, tensioners, fan blade, fan clutch, drive belts. How to Change a Timing Belt. i told him that the motor is a non interference motor and that the valves shouldnt have been touched. A vacuum line or clogged fuel filter won't cause a "sudden massive" loss of power. Re: noticeable symptoms if timing belt is off by one tooth ? If the marks line up, with the crank pulley mark pointing at 0 TDC on the plastic scale and the hole in the cam spoke lines up with the Ignition timing is tough to understand, but easy to adjust and set. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car. If the marks don't line up and are off by a full tooth or more, your timing belt may have slipped. You can check for a slipped timing belt by sighting into #1 cylinder through the spark plug hole and cranking it to TDC by the timing marks. I have a 2000 3. the cylinder should not be moving up any more @ 0 and start moving down when 0 is pasted What about if the cam is off a tooth? Somehow when you lined up the dots on the timing set you was off one. The right amount of fuel and its timing are extremely critical because it regulates the combustion of fuel and the speed of the engine. A good timing belt should display none of these symptoms. There is no squeak that lets you know it is time. 3 Ford is relatively simple compared to our front- and all-wheel-drive competition. The only difference between a timing belt and a chain is that belts are made out of rubber, while timing chains are metal chains. no lights other than battery and stop but engine had stopped so thats normal. ALL of the toyota timing belt V8 engines (lexus included) are interference engines and can be nearly destroyed if the timing belt snaps. Timing belts, as a rule, should be replaced every 30,000 miles. Unlike a timing belt, a timing chain will normally last the life of the engine without needing service or replacement. On my 97 outback wagon I replaced my timing belt and all went apparently well. Rotated crank 720 degs and found that the intake cam sprocket became one tooth off, in comparison to the timing cover mark. A timing belt replacement involves removing the timing belt cover, pulling off the worn-out timing belt, replacing it with a new belt, and adjusting the position of the camshaft and crankshaft to ensure seamless operation. The workshop manual says that to remove and replace it, I will first have to remove the starter motor and lock the engine by holding a screwdriver against the ring gear, and then I have to undo the the crankshaft pulley bolt before I can get the lower timing belt cover off. If timing is found to be off, cover removal and further belt inspection or replacement is necessary. Symptoms: Below are a couple of pictures of a failed Timing belt idler we recently replaced, because it came out of a Subaru with a manual transmission there is a belt guide just above the crankshaft sprocket that prevented the belt from coming off, so this driver was very lucky, had it been an automatic model the belt would have come off causing valve damage. I have a 2000 Accord with a 2. Timing belt driven water pumps normally last for the manufacturer's recommended interval for replacing the belt (100,000 miles or so) but if you're replacing the belt you might as well do the water pump, and vice versa! Symptoms or signs of a bad timing belt Timing belts give no easily noticed symptoms or signs that they are about to fail. When this occurs slack in the chain tends to jerk and the plastic timing chain guides can break. Symptoms of timing belt off one tooth? - 06/11/15 01:18 AM Vehicle in question is a 2004 Honda Odyssey EX with 138k miles. It is not recommended to adjust the belt to get the sound you want. I managed to get the idle around 750 rpms but it misfires frequently. E. Because of the costly nature of timing belt replacement many car owners can be reluctant to get it replaced at the appropriate time. If it is rubber, then there are … Timing Chain Jumped Symptoms And What Should You Do Read More » Symptoms of Being 1-Tooth Off on Cam Timing - posted in Advanced Virtual Mechanic: We were having some discussions around the shop regarding what the symtoms would be if you were 1-tooth off on cam timing in either direction (with a stock cam). Hey Steve, how familiar are you with replacing timing belts, and did you turn the engine over by hand to check the timing of everything after installing the new belt? I think that even if you're a tooth off it probably wouldn't run as bad as you describe, because I think people have done that and only noticed it much, much later. Free shipping . Timing Belt Replacement – Find a Meineke Shop in Your City. And I adjusted the timing to read what was in chiltons (I forgot exactly how many degrees it was at this time). And its not going to stretch like a belt would, timing chains don't stretch, they break. Thanks for the A2A, There are quite a few options. Removing the timing cover, the belt and all looked good, but when TDC was lined up on the ring gear, the cam and the IP looked to be one tooth off. This allows you to easily restore your engine's original performance. 3. Likely to be the big deal. As technology has improved, many manufacturers recommend intervals up to 100,000 miles. These motors, despite the timing chain concerns, keep on clocking off 200,000, 300,000 and even 400,000 miles without any major repairs. When I built my engine the #1 piston was all the way up, the timing marks on the balancer were lined up, the lifters for cylinder 1 were all the way down, and the dots lined up on the timing chain. Anyway, i ordered and installed new spring, lined up marks on cam to timing cover, and timing belt. 0T FSI Engine. Corrective Action When replacing Changing the Timing Belt - Honda Civic Driving beyond 100,000 miles beyond the expiration for a new timing belt can be a nerve-racking reminder. **If your Audi or Volkswagen does not qualify for the Audi/VW 2. It’s important to know the symptoms of a bad timing belt or chain, so this doesn’t happen to your Chevy Impala. Symptoms of a worn timing chain. In the past someone, either the factory or the last person who changed the belt, put some white marks on the cam pulley and the inside of the timing cover etc. I reinstalled the belt and reassembled everything back together, but now my battery is dead so I can't test it. 3L 4 cylinder and manual transmission. Timing belt and chain replacement is one service that isn’t going away any time soon. 8T (assume timing belt is off). 3 Ford Timing Belt Change. In modern vehicles, the covers are designed to 1 tooth off on timing belt? Built Motor Discussion. I got a call that they belive the timing belt may be at issue and claim that one bank has jumped a tooth or so. Of course I noticed it right away and as that was all I had done I knew what the problem was. Why? Timing Belt replacement tends to be an expensive exercise that appears to make little difference to how a car runs, although failure and trying to live without it might prove impossible. So, I removed the timing belt cover to take a look at the belt, crank sprocket and cam sprocket. Purchased this in January of this year; days later, I found recent service records where the PO had problems with the engine overheating, and temp gauge going into the red. Engine won't turn over. The cam aligns 1/2 tooth advanced. Failure to maintain or replace your timing belt can result in catastrophic engine failure which can cost you thousands. so i have been trying to figure out the problem since. If you have the ability and the tools to remove your timing belt cover, the physical appearance of the timing belt can provide clues to its condition. Probable Cause of Failure Belt has been installed improperly and timing mark is one tooth off from lining up on the cam. Audi A3 Timing Belt Replacement Kits BLAU OFFICIAL O. no banging sounds so the valves arent hitting. The Symptoms of a Failing Timing Belt Your timing belt is an essential component of your engine. Thanks Symptoms That the Timing Chain Jumped The timing chain or timing belt makes your engine run. If it is an interference engine, the timing belt being off can cause the valves to hit Today's engines have adjustable cams so if that system is bad symptoms could be  The timing chain has the important job of synchronizing the crankshaft rotation with the camshaft. It is estimated that nearly one-third, or about 70 million, vehicles currently on the road utilize a timing belt. 5L SOHC or DOHC motors there are a few common things to look for and I have some tips to help you get through the job even if you don’t have the factory tools. When I did it that way I noticed it was off by 1 tooth on the cam pulley. Tooth wear. After i tightened the adjusting bolt i thought i was all set but now it is way too loose and when i crank it the right side becomes loose and the right side becomes tight. 1) When lining up the timing marks you have your gear, back plate, and belt marks. CAUTION! Improper belt tension can cause severe belt, blower and engine damage. My engine is idling roughly. shut motor off. The amount of damage caused by a belt breaking vs a chain breaking entirely depends on the type of engine. If it jumps a tooth, or breaks entirely it can leave your vehicle completely stranded. 29 Dec 2017 This is one of the main symptoms of a bad timing belt. I drove the vehicle to a garage in this condition for about 20 miles at low revs, where they are recommending a new engine, despite not having inspected further to see if there is more damage to the valves,pistons etc. then you can use a wheel puller to pull the sproket off without damaging the oil pump housing or crankshaft in any way. i only had the belt chaged 4 1/2 month ago and have done 3500 miles!!!! The usual suspects are the timing gauge binding, not finding the right TDC, and the timing belt being off a few teeth. Generally timing belt problems present themselves with no warning. The timing light showed the mark 1/4" to the left of the timing indicator. Slack in the chain allows it to strike the timing cover. This engine uses a crank sensor and cam TDC sensor so i would think any disparity between the two would throw a CEL. Personally, I use both a blue and a silver sharpie and I make matching marks all over the place - literally. Make sure the replacement belt is identical to the original. If it skips one tooth, which is most likely what happened if your engine is running rough, but runs, no damage has The service team at Redline Speed Worx (RSW) has increasingly begun seeing vehicles that have reached approximetly 80,000 miles and religiously followed the dealerships' prescribed 10,000 mile oil change interval, coming into our facility suffering the symptoms of a failed timing chain tensioner. $22. How to Tell if a Timing Belt Tensioner Is Bad. No movement would confirm your diagnosis of a broken timing belt. A compression test will indicate if there's a cylinder that is suffering from low compression, a bad valve, or if the engine's valve timing is off. also check the ground wires at the thermostat housing. Slip the timing belt over the left camshaft pulley so it’s other solid white line (the one farthest from the direction arrows) aligns with the mark on the pulley. A spring-loaded tensioner keeps the belt tight, but after a while the tensioner will run out of travel and the belt will go slack. If it is an interference engine, the timing belt being off can cause the valves to hit the pistons. A timing belt synchronizes the camshaft to the crankshaft position, so the valves will open and close at the proper timing in relation to the position of the pistons. Manual transmission vehicles are particularly susceptible to jumping a tooth on a timing chain because many drivers develop a habit of depressing the clutch, turning the engine off and using first gear as a parking brake. One tooth off will make it idle really low when stopping at the light especially if the engine is warm. I would gently rotate the right one down to match it up. I was sure the timing was correct, but the car just isn't 'right'. . Not sure on that i will have have to lo The timing belt links the camshaft to the crankshaft, which manages the pistons of the engine. Know the truth behind the failure as we take a closer look at the Honda K-Series, the company's most sophisticated four-cylinder to date, now consider its weak tensioner resolved. The belt should be replaced when engine is at top dead centre with cam sprockets and crank in fixed position so as to not be moved when re fitting replacement belt. An engine cylinder needs a good seal between the piston rings, the cylinder walls, and the valves and their respective valve seats. Timing belts last 60,000 to 100,000 miles. Who did the timing belt change? check the bolt that holds the ground cable to the engine block (from the battery). What are the symptoms of timing belt jumped a tooth or two CODES ok i check the timming belt yesterday and my first guess was that my timming is off one Tooth cause i aligned the camshaft and than look at Crankshaft pully timing mark and one time ot was at 5 BTDC and i try to fixed it . It is good for its flexibility, but over time it wears down, stretches and cracks which can lead to your belt jumping a tooth and throwing off the timing, or worse, the belt breaking. If the marks don't line up exactly, but are only off by half a tooth, use some chalk to mark the positions. Your vehicle's repair manual will be able to tell you what type of engine you have, as in timing belt or timing chain. If this is the case, you may want to seek professional advice before continuing. Check if this part fits your vehicle. In some cases, this may break the cam, snap the timing belt or shear the cam drive sprocket off the end of the cam. How does the engine idle now, rough? I'm pretty positive that the belt markings were off. Once you put tension on the belt rotate the engine by hand 720° or two revolutions and verify that the timing marks are lined up correctly. Symptoms of a stretched timing chain include: A check engine light should come on once sensors in the engine realize the timing is thrown off; You’ll start to notice a rattle, especially at idle as the loose timing chain vibrates around the engine. I would have to say that doing the timing belt seemed like it was a bit easier than changing the Oil will shorten the life of your timing belt; The water pump should be replaced with the timing belt; When replacing the timing belt on a Subaru 2. Ok just been able to fool with this thing, been busy and its been pretty damn cold. A timing chain is a different type of system doing the same thing a timing belt does. Should be, but there's none. One reader advanced his cam timing by slipping the timing belt by one camshaft gear tooth. The engine was within minutes of breaking the belt or skipping enough camshaft teeth, then “crashing” or bending all the valves. car was running fine. It is easy to do with plugs out and covers off, etc while changing the T belt. The belt controls the However, you might have noticed some symptoms of a worn timing belt. It’s important to know the symptoms of a bad timing belt before you’re left with permanent engine damage. It may run poorly and backfire if it slips or jumps Toyota - Camry - You dont get it, do you, unless you use a timing light you wont know anything, now you know nothing of its timing. Depending on the car the timing belt will be rubber or a metal chain. It is used in many Toyota and Lexus cars from 1994 to 2003, including the Lexus ES300 and RX300, and the Toyota Camry, Avalon, and Solara. If you are off one tooth, it What are symptoms of timing belt failure on Toyota 4 runner? It will quit running if it breaks. "Play" accumulates, the belt is not sufficiently tight, and it jumps one or more Running an engine for an extended period of time with the timing belt off (even one tooth) can cause serious engine damage. I don’t know if that included the tensioner but he did say that this is a manual tensioner and that when he got the cover off the belt was still correctly tensioned. Secure the belt to the pulley with a small clamp or clip. 27 Jul 2010 Symptoms of a timing belt that has jumped/skipped a few teeth: One Tooth: It will idle like some sensors ?? or it could be that timing belt off ?? 924/931/944/951/968 Forum - If the timing belt were off by a single tooth - Would you bend a valve, or would the motor still turn over OK, but  If it is off by one tooth, and a non-interference engine, it may run, but not well. I put the tensioner back on then slipped the belt on. 0 3cyl. ok new question, we took the truck to a mechanics house to have the belt done, and he said that the belt did break and that the valves must have been bent also because he can turn the crank pulley by hand which means that the motor has no compression. After having read many posts on  A timing belt, timing chain, or cambelt is a part of an internal combustion engine that A timing belt is usually a toothed belt—a drive belt with teeth on the inside . Now I removed the belt and the tensioner and put the belt back on with the marks I painted on it with the lines on the cams and back plate markers and put tension put on the belt and tested it again by rotating the engine till the marks came back all the way up and again the belt jumps over one tooth on the cams again. Timing belt driven water pumps should always be replaced when the timing belt is replaced. If the timing belt gets loose, it may skip a tooth and the  30 Aug 2017 If your timing belt breaks it can mean disaster - need a new car kind of disaster. So when i did the oil galley gaskets, it seems the timing was off on the primary chain (did not remove secondary chains) during assembly. What Happens When the Timing Is Advanced It has long been held, and demonstrated at the Club's Dyno Days, that advancing the timing to 13 to 14 degrees before top dead centre (BTDC) is a cheap way of achieving lower rpm performance in the Mazda MX-5 1. 12 Jan 2016 The timing belt is located under a timing cover and is in the front of the engine. This means that special precautions must be taken for off road applications to   21 Jan 2010 I just did timing belt and and somehow i am one tooth retarded on the exhaust cam witch is 10. The vibration is quite noticeable in the steering wheel. This is the central part that connects the motor to the wheels. it has cam and crank codes along with every cylinder misfire. There are a lot of parts inside your car and engine. Any sign of a crack in the rubber of any tooth here is bad news and shows that the belt is at the end of it's useful life. Yes you can save hundreds of dollar by replacing car timing belt at Home or in Office or find some mechanic for replacement but don’t forget to Evaluate Car Timing Belt replacement services before buying. Chevrolet Code P0300: Random/Multiple Cylinder Misfire Detected. There were also P3400 and 3497, which I think are a separate and well known issue. before it was pouring water from the exhaust. I just changed the timing belt, balancer belt, water pump, tensioner wheels and other external belts. I did a compression test and only got 100psi per cylinder, this indicated both banks were out Timing belts are typically only used on overhead camshaft engines. GENUINE For TOYOTA 3. Then using your jack and a block of wood, support the weight of the engine under the sump. It is controlled by a round pulley called a tensioner that keeps the line taught as it got me to thinking of the skipped timing belt tooth along with the other issues going on. This results in a loss of synchronization and engine performance. This may produce debris, worn from the timing cover or produce a hole in the cover and a I assumed that you have a 3. • Includes a warranty equal to the OE replacement interval. Worn pulleys and belts as well as mis-machined pulleys can contribute to blower whine. 4 loses acceleration following timing belt change it wanders off to the pub. That's easy to find out and takes very little work. A A timing cover protects parts such as the timing belt, timing chain, and gears inside of your vehicle. It was also sporting a new radiator since the old one caused the overheating problem. Timing belt change intervals what would be a side effect of timing belt off a tooth on a 99 v6? im working on a friends check engine light, he just bought the car a few months back and the mil has been on since. You could have a belt off a tooth on the intake, a fuel injection issue or a coil/grounding problem that caused the initial plug failure. What are some symptoms of an injector pump being too far advanced or too far retarded? Mine hasn't been 'tuned' since the belt and accessories were last replaced a long time ago and I think that might be responsible for some of my wintertime hard start problems. The car seemed to run fine without any problems but the haunting feeling of being stranded with damaged valves that will add to the burdening cost always linger. Sounds like your timing belt is one tooth off on the cam, this I have seen before especially if it is a twin overhead cam. To give you a fast answer that would be yes it can, if you are saying that the cam and crank are not set right if the belt is installed and the cam and crank are not set to the proper positions then yes this will affect your variable timing sensor. We often get asked how to line up the timing belt marks on a Toyota 1MZ-FE engine. If the timing chain jumped a tooth I should still be able to set ignition timing, but the valve timing would still be off Right? I think so. Have you double-checked the engine timing with a timing light to see whether everything came together properly? Your symptoms sound like the head might also have shifted when you slipped off the old belt or the new timing belt may have jumped a tooth when you first restarted the engine. If the ECM detects that CKP is ahead or behind Bank 1 CMP, either a four-cylinder engine or the V6 or V8 bank with Cylinder 1, perhaps due to a jumped timing belt tooth or a stretched timing chain, it will illuminate the malfunction indicator lamp (MIL) and set DTC P0008, “Engine Position System Performance (Bank1),” in system memory. You will want to make sure the timing belt pulley is in good shape as well. Therefore, maintaining precise timing is important every time the timing belt of an engine has been replaced or adjusted. A recent study found that one out of five vehicles needs a new belt, which is crazy when there are 15+ million cars on Australian roads. freewill53 Well after determining that my timing belt is too tight, i went through the process of adjusting the tension from what the manual says to do. Inside timing belt kits are usually all the materials you need to mount a new timing belt. If your car ran fine and then the motor stopped suddenly with a clunk and won't restart, it is likely your timing belt. you just have to take the main cover off and turn the wheels to see the damper and get a socket on it to turn cw. Timing the 6. When you turn the key, you might hear the starter motor engage, but since At idle, the motor literally shakes back and forth and I can feel a vibration coming from it. That's the most common failure of a timing belt. I have spark, its running rich. How does the engine idle now, rough? If the chain jumped a tooth you would get a crank/cam correlation code, it likely wouldn't be drivable because the ignition timing would be so far off. 0 liter version, the Accessory belt wear symptoms The auxiliary belt, tensioner, idler and pulleys inside the accessory belt drive system work together smoothly, to provide the drive for systems such as the power steering, alternator, air conditioning and, sometimes, the cooling system via the water pump. The trapezoidal tooth shape timing belt with metric dimensions is one of the most commonly used timing belts in modern-day vehicles. Too much advance will cause hard starting and pre-ignition. 3 V8 and now has just under 588,000 kms on it. A chain Bad Ignition Coil Symptoms Turn it clockwise to unload the belt tension and then slip the belt off the pulley. losing power on one tooth, seriously low power to no running on two. 2L. Without proper maintenance and replacement, the timing belt can break, resulting in costly repairs. Maybe the distributor is off a tooth to check timing chain remove no#1 spark plug and turn motor slowly by hand clockwise, when timing tab is getting near 0 deg see if #1 piston is @ top dead by using a straw or something. They stated the timing belt had broken (89,000 miles) . Note:-The car starts and runs ok, it is throwing ZERO codes, normally ppl seem to have a cam pos'n code when they are one tooth off. AA came out and asked me to turn it over 1 turn and straight away he said timing is out. check your owner's manual for the manufacturer's replacement interval. While a timing chain will usually last far longer than a timing belt, it will suffer from wear and tear and will need replaced at some point during the life cycle of the What I do as I replace the sproket anyway is to drill and tap two holes in the crankshaft timing sproket. I gotta wait until my wife comes home so I can get boost and see if it Sounds like the timing is off a tooth or so. For a twin cam, humm, if one is off and the other is on the money should most likely be a power loss on one cylinder, may be kinda like a under load miss, possibably. Gen II BLAU® Audi A3 Timing Belt Replacement Kits for the 2. Our Timing Component Kits with Water Pump offer the same OE components as our TCKs with the addition of a water pump. If your timing belt has worn out or missing teeth, then it will likely slip out of its position  My mechanic replaced the timing belt/water pump on my 1996 Legacy belt is put on 1 or 2 teeth off how it's supposed to, the symptoms you  5 Jan 2019 Newer cars have an automatic timing belt tensioner that doesn't need any adjustment. Get noticeable symptoms if timing belt is off by one tooth ? My first thought was trouble with the hydraulic valve advance system, but I'm told that sets a code, my second stab was the belt may be 'off' a tooth or two, due to the rebuild by an inept mechanic (me). How do you find TDC on a 1. It might save a lot of work. It was about 10 teeth off. DO NOT skimp on timing belt change. Try it if you don't believe me. This included the water pump, timing belt, TB tensioner, idler and tension pulleys. make sure it's clean and TIGHT (and the cable is in good condition). Valves get bent most often on vehicles that have had a timing belt break or a timing chain jump a sprocket. If these teeth ever start falling off or  4 Apr 2018 Let's look at some of the symptoms of a bad or failing timing belt: sheared off; Teeth are hollowed out; Edges of belt are worn; Back of belt is  RX - 2nd Gen (2004-2009) - Timing belt replacement, one tooth off ! - I'm an adherent reader of this forum. But when I drive it now it seems really sluggish. If it runs without backfiring much you are very close to the original configuration and may be only a gear tooth off. timing belt off a tooth symptoms

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