Timing chain failure in a MINI, as well as in most other cars, is often attributed to chain. A loose timing chair tensioner can let oil leak from the tensioner adjustment bolt, increasing crash risk. it's fuel or electrical. In saying this we have also serviced these vehicles with well over 100,000km with out any signs of timing chain issues. Replace your 2. Find many great new & used options and get the best deals for For GM Engine Timing Chain Tensioner Kit 12626407-AM Chevy 4. This is what happens when an engine is not very well maintained. This is a sign that the timing chain is near the breaking point and should be replaced promptly. Here below are some common symptoms which might demonstrate that your car is having a worn-out or broken timing belt. Always have. The chain is located in the front of the motor and is attached to a set of gears and pulleys that power multiple mechanical components, including the crankshaft and camshaft. Once you notice them, you can bring your vehicle into the auto body shop and have the timing belt replaced. The same goes to worn tensioners. The best way to prevent timing chain failure is to have the tensioner inspected. 7 andd i have to set the timing at 8 degrees to drive it but it misses at idle. It won't run any better, but you will have the peace of mind that comes with this job. 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. The rattle might be accompanied by a check engine light triggered by sensors in the crankshaft and camshaft that are detecting timing issues. A fractured engine timing chain guide could cause the engine timing chain to break. A bad timing belt or timing chain can be a serious issue. Where the timing chains had become elongated, they had to be replaced. 0T FSI Cam Chain Tensioner (06F109217A) with a high quality OEM VW/ Audi 06F-109-217-A Timing Chain Tensioner (for Camshafts) FSI 06F109217A - Deutsche Auto Parts JavaScript seems to be disabled in your browser. Look at the valves for that cylinder, both cam followers should be at their lowest point. All new from jeep. A broken engine timing chain will result in severe engine damage. Timing chains are moving parts that eventually wear out or break, but they are durable enough that manufacturers have no specific guidelines about when to replace them. It is a relatively simple procedure that should be done from under the car. There are so many bolts to be uncrewed before we can get access to the chains, and so many warnings that we have to be aware of to carry out a successful replacement job. This is one of the variable valve timing solenoid symptoms that are also the cause. Timing chain and guide failures are relatively common on some vehicles, even at the 100,000-mile mark. A duplex (i. with only 110k miles my opinion would be that the chain is more than likely good and it should outlast the car. Join us as we dive into first design problems with the plastic chain guides and tensioners. I noticed the other a day a bit of a vibration when taking off now and then, and some times after starting up. The rattling is most prominent in engines with overhead camshafts. Does my vehicle have a timing belt or timing chain? Below is a quick reference chart to identify if your vehicle has a timing belt, chain or gear. In general, the lifespan of timing chains is longer than that of timing belts. he also covers damage to the timing chain cover (oil pump), he has a series where he rebuilds a blown motor and this shows you how the timing chain is correctly set to the cam and crank sprocket to maintain correct valve timing (chain has bright links and both. The chilton book and the install instructions for the timing chain both say the alignment marks should at the 12 0 clock position on the crank sproket and at the 6 0 clock position on the cam sproket. You may have to register before you can post: click the register link above to proceed. Both run as good as the day they rolled off the line, if not better. I noticed chain had almost 3/4" of slack! Is this normal? I have done quiet a few timing chains on lots of v8's and never noticed Chain to be this loose. So i had that fixed. My 2011 Seat Ibiza 1. There are potentially other symptoms as well. So the cure for the retarded timing is to install a '68-'71 timing chain set. Symptoms of a stretched timing chain? I have a 93 k1500 5. Failing of a timing chain tensioner can occur slowly and if you do not catch it in time the slapping chain and lead to a number of engine related problems - some catastrophic. 4L Triton 3valves. If you think you are experiencing any of the symptoms mentioned above then it is important to get the Nissan Juke car checked out from our car garage pictured below. But even then, you still can't totally base its life off of that. It can stretch or fail over time, and could require replacement to keep your engine running at its best. I'll admit it my went out at 97,000. Nissan timing chains for all engine types are available here at our website. My O/H has a 5 year old mini which has been diagnosed with a fault on the timing chain and it needs to be replaced costing approx £600. car sat up for months on lot. This week's post is dedicated to an engine part that is often overlooked, its importance not totally understood, and its service specs minimal. Timing chain broke, with no warning, bent all the valves and wasnt even driving it. 3 liter V-6 engine timing chain problem is an engine that runs very rough. We also provide inexpensive and guaranteed 3 day, 2 day, and Overnight shipping options, so if you need your Engine Timing Chain Kit (VR6) tomorrow, eEuroparts. This is common and usually nothing to worry about. Melling timing chain tensioners are available as individual parts and also part of several Melling timing chain sets. Therefore it's going to cost $1800+tax to fix. The timing chain cover is responsible for keeping dirt and debris from entering the inside of the engine. Without variable valve timing or variable valve lift, the valve timing is the same for all engine speeds and conditions, therefore compromises are necessary. Common symptoms of failure include excessive vibration or "slap" from the timing chain, and the possibility of plastic particles throughout the oil. It connects the crankshaft to the camshaft. This is a sign that the timing chain is near the breaking point and should be replaced promptly. Rough Running. The chain is located in the front of the motor and is attached to a set of gears and pulleys that power multiple mechanical components, including the crankshaft and camshaft. The most common symptom is chain rattle after a cold start. After doing a lot of research online and listening to others with the same issue (on youtube) I narrowed it down to the VTC Actuator. If you purchased your truck after August 2002 and have less than 100K miles, you should be able to get it worked on under warranty. doesn't seem to hard. Timing chain broke, with no warning, bent all the valves and wasnt even driving it. Yes there are some warning signs of bad timing belt that gives you red signal before time. Tell me they gonna reset the timing and replace the tensioner. at 113,000, my mechanic is telling me to either replace the timing chain and components, or get rid of the vehicle, as the engine will eventually fail if this in not addressed. possible internal damage from the strain. A timing chain synchronizes the rotation of the engine's camshaft and crankshaft; a properly functioning timing chain ensures that the valves open and close at the correct times. Find Expert Advice on About. The timing, duration and lift of these valve events has a significant impact on engine performance. The M272 and M273 engine introduced in 2006 have had problems with the timing resulting from a worn balance shaft sprocket (M272) or timing chain idler gear on the M273. This slipping causes the engine to jolt from the force of the timing belt teeth catching on the gears. The engine timing chain, timing chain tensioner and timing chain guide must be replaced. This may cause some very unusual, and difficult to diagnose, drivability issues, including reduced fuel economy and increased emissions. Angle it to where you can see the chain (it's all the way on the front of the engine): Here is what you want to see: Two chains side-by-side: Happy hunting!. The largest 4Runner community in the world. It's important to know the symptoms of a bad timing belt or chain, so this doesn't happen to your Chevy Corvette. Align the timing mark. 0T TSI owner? Does your vehicle suffer from engine stalling, engine rattle upon cold or warm start, or possibly the feared Check Engine Light for misfires, camshaft or knock sensor codes?. Due to the fact that the timing chain and belt are housed inside the engine, the timing cover even helps to keep the timing belt or timing chain solid and secure for smooth operation. REPLACEMENT TIMING CHAIN KIT. This week's post is dedicated to an engine part that is often overlooked, its importance not totally understood, and its service specs minimal. Page 2- Timing chain needs replacing Motoring. So, what's the difference between a timing chain and a timing belt? Well, there's the obvious — one's a belt and one's a chain — but each has an advantage. Metal shavings found in the oil. timing belt and timing chain repair, replacement, diagnosis, Symptoms of a bad timing chain or timing belt, don't bend valves! 30 years serving Gainesville , Hawthorne FL. Question 2 is should the timing chain be replaced as a matter of maintenance, and if so, at what mileage? Thanks in advance. Apparently according to Mercedes Main Dealer, its a very common problem with E200 (2003-2004). 42 thoughts on " VW/Audi 2. So, what’s the difference between a timing chain and a timing belt? Well, there’s the obvious — one’s a belt and one’s a chain — but each has an advantage. 8L 30 valve models. A worn timing chain will allow the valves to operate at incorrect times, which causes the engine to run very poorly. We found some posts about the timing chain wear coverage and contacted our local gm dealer and they said to bring it to them and they would check it out and tell us if it would be covered. Regardless of the type used, the symptoms of a broken timing chain or belt are similar because they both perform the same function. Whether the symptom is noise or engine performance the root cause is always caused by the timing chain tensioner, guides or a worn and elongate chain. Some engines use gears, instead of timing chain/belt for synchronizing the crankshaft movement and camshaft movement. I want to buy an early 730d but most have well over 100,000 miles and there are several on sale with blown engines!. Don’t forget to also replace the water pump, tensioners and pulleys while changing the belt iteself. He has had several Micras in with stretched chains causing similar issues. but is making it every day now. The timing chain on my 2000 Intrepid broke and now Chrysler is trying to blame me for not maintaining my car. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a. 250 movement when the rack pushes back and forth over 3-4 teeth, and overly worn cam chains from that slapping and snapping around. 00 for repairs. I've also heard that in order to replace the timing chain you have to lift the engine out of the car so it will cost a few thousand bucks. 4L Triton owners, is the problems related to the timing chain, tensioners, and the variable valve timing. the engine has good torque outside of its supposed cam range, inside its cam range there's no powerband, just revs out, it revs to 7000 easily just no powerband, its almost as if the. 4L Accordind to this you don't set the timing but the timing offset. Timing Chain Wear: Since the 3. i was wondering if i need to replace the chain or is it something else that might be causing it to be loose. The VVT solenoid system performs the best with clean engine oil. Replacing. I am trying to get confirmation on this. The usual culprit is broken guides, caused by the original timing chain tensioner being too short thus allowing the chain to be slack, and rubbing or clattering against the guides. Regardless of sprocket or gear design, I used my own quick test for engine timing chain wear without the need to remove the engine's timing cover. I had all the parts ready: chain, sprockets, tensioner, crank seal and cover gasket. The shop claims that the timing chain did have slack in it and that a tensioner had failed. A timing chain / timing belt (depending on the engine) as the name suggests is crucial for precise valve timing in engines. Gears and chain. December 10th, 2010 at 11:13 am. Symptoms that your Timing Chain Replacement is Required Rough rattling noise from the front of the engine area. Prices will vary from state to state and from car to car, but they should give you a rough idea of what you can expect to pay. Timing Chain Tensioner Symptoms A very tappy engine. Engine noise on cold start up. Failures in this system can result in very expensive repairs or engine replacement. The revised tensioner is longer so keeps the chain tighter, avoiding issues. Once you notice them, you can bring your vehicle into the auto body shop and have the timing belt replaced. Timing Chain Wear: Since the 3. 7L V6 engines, its 3. It seems fishy to me cause its only got 50,000 miles on it. Unlike a vehicle equipped with a timing belt, the timing chain is not a regular maintenance item and only needs to be replaced when symptoms are present. If you purchased your truck after August 2002 and have less than 100K miles, you should be able to get it worked on under warranty. The timing chain had begin rattling and was inspected at a Mini dealership. The balancers do go bad but it's usually due to neglect. Also make sure you're timing chain hasn't jumped a tooth or two (if it has you want to change the chain anyway). Timing chain and guide failures are relatively common on some vehicles, even at the 100,000-mile mark. Whether the symptom is noise or engine performance the root cause is always caused by the timing chain tensioner, guides or a worn and elongate chain. Went 265K on a Toyota pick'em up truck (22RE engine) and never bothered with it's timing chain. searchResultsCount }}. When this occurs slack in the chain tends to jerk and the plastic timing chain guides can break. the amount of movement you make withyour socket before the distributor starts to move is how much play is in your timing chain. It could be rocker noise or blowback noise from early timing. Timing chains. Ford explorer: Jumped timing chain symptoms - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. Delivery Info. There are other forms of adjustability like seen on the belt drive above where the cam gear is adjustable (there are chain-type timing sets that use this as well). If the driver pushes it past the recommended oil change interval, the first item to show the abuse is usually the timing chain. The FSI engine is driven by a timing belt system which links the cylinder head, camshafts, and crankshaft to run in sync. The M272 and M273 engine introduced in 2006 have had problems with the timing resulting from a worn balance shaft sprocket (M272) or timing chain idler gear on the M273. the timing chain tensioner failed and my car skipped timing. Timing Chain Tensioner Related Repair Advice. Take your time, clean any and all gaskets required and do it right the first time and be done with this. The affected vehicles’ timing chain tensioners can loosen, causing oil leaks under extreme riding conditions. These symptoms could mean imminent timing chain failure As the chain wears it can stretch and cause the timing to run out, Febi explains Febi supplies high quality engine oil to ensure optimum performance of the timing chain is maintained. A quick history The original new MINI (2000-2006) did not suffer from timing chain issues. The 2010 Buick Enclave has 16 problems reported for timing chain stretched. Timing belts, yes, not chains. Best Answer: Every chain has a service limit, a maximum length for a specified number of pins. This is common and usually nothing to worry about. Then watching the distributor rotor while you turn the crank in the other direction. The timing chain is an alternative to the timing (or cam) belt. Ive replaced a dozen on older and newer 2. i turned the truck off after getting a crank cam correlation code and then it wouldnt start again. These are the tools called for in the repair manual when doing certain jobs on the 3. During the repair they found that my timing chain is stretched beyond the requirement and would need to be. How to replace VW Passat timing belt explained at Blauparts. Slack in the chain allows it to strike the timing cover. I have ran a scanner on my computer and its reading my Spark Advance to be 39-45degrees advanced which is insane compared to the 10-25 it SHOULD be. Generally, timing chains last longer than timing belts, with some rated to last the lifetime of the car. according to tsb. The engine timing chain, timing chain tensioner and timing chain guide must be replaced. So i have an 06 accord ex-l, 4cyl, auto, 80k miles. When the engine runs poorly while driven due to a worn timing chain, the symptoms may include backfiring, bucking, shaking and. The average kilometres that we replace timing chains on these engines are around the 100,000 km mark. if the chain has worn through the cover, it will almost positively be on the driver's side since that is the guide that breaks first 99% of the time. The good news is that BMW recognized the timing chain components in the N20 and N26. Timing chain failure on the JTD Multijet engine is not unusual. It would run smooth then rough. Listed below are a few of the symptoms of a worn out. The 2010 Buick Enclave has 16 problems reported for timing chain stretched. Turn the engine by hand using the crankshaft bolt till the piston is at the very top. There is a tensioner that maintains the adjustment. NOTE: Timing chain can be changed without dismantling engine. WARNING: Timing chain failure is the NO. The rattle might be accompanied by a check engine light triggered by sensors in the crankshaft and camshaft that are detecting timing issues. If you've got a Saturday free, you can save nearly $1,000 by doing it yourself. Engine won't start or fails. Some engines use gears, instead of timing chain/belt for synchronizing the crankshaft movement and camshaft movement. Timing Chain Jumped Symptoms and Diagnosis July 15, 2018 by Jason Of the many things that can go wrong with and engine, the timing chain jumping can be one of the most frustrating problems to have. Rough idle, fairly smooth under acceleration but poor power and seems to run a little rich. 6L DI engines, but only time will tell. A bad timing belt or timing chain can be a serious issue. I had all the parts ready: chain, sprockets, tensioner, crank seal and cover gasket. Whether the symptom is noise or engine performance the root cause is always caused by the timing chain tensioner, guides or a worn and elongate chain. Timing chain guide broken (video Included) Timing Chain Tensioner, Is This Normal Or No? Engine Changed Timing Chains, Guides And Tensioners. Page 2- Timing chain needs replacing Motoring. Symptoms of a loose timing chain When a timing chain is loose you'll likely hear a rattle during startup or idling in the engine. Timing belts and chains control the opening and closing of the engine's valves. The "A" camshaft is either the intake, left, or front camshaft. could some experienced chap please explain what the symptoms of a M-110 timing chain about to let go would sound like. I think they are best left well alone until the symptoms of a stretched chain manifest themselves. , to the front of the engine, where the timing chain runs). Mostly labor $1300. Like hammering them on when doing the timing chain. The chain is located in the front of the motor and is attached to a set of gears and pulleys that power multiple mechanical components, including the crankshaft and camshaft. 5 has had timing chain issues since about 62,000 miles. same symptoms as before. Valve seat came out, broken lifter bore. Although Nissan did not design the timing chain as a maintenance item, the plastic guides wear out long after the vehicle warranty expires. Caddyman, I cannot believe you’re recommending to someone that they lease a car. At that point the chain will stretch and eventually skip teeth. Rough Running. Timing Belt Problems: The Reasons. A broken engine timing chain will result in severe engine damage. I'm talking about the timing chain. If your Rogue timing chain has been running for around 100,000 kilometers, it may be time to change it. Without ruling out the possibility of a faulty sensor the guy seems to think the problems may be caused by a stretched timing chain. December 10th, 2010 at 11:13 am. Testing for a Honda Broken Timing Belt. 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. You might also hear the rattling noise when you are speeding up and slowing down. It is controlled by a round pulley called a tensioner that keeps the line taught as it. They stated that it's a known issue with Mini. RepairShellService. The solid links in a timing chain are meant to eliminate the need for replacement. BMW issues a service bulletin for models powered by the N63 4. 4L Triton 3valves. The revised tensioner is longer so keeps the chain tighter, avoiding issues. The engine timing chain is very weak – it stretches over time, and ultimately snaps. It's important to know the symptoms of a bad timing belt or chain, so this doesn't happen to your Scion XA. The timing chain had begin rattling and was inspected at a Mini dealership. It's either going to break or it's not. 0T TSI Timing Chain Tensioner. However with BMW Goodwill the breakdown will be as follows. How to Tell if a Timing Belt Tensioner Is Bad. The timing chain of an engine should last the life of the enginer, but the tensioner that ensures it stays tight to the cogs begins to reduce the tension held of on the chain, causing it to slack and rattle and tap. Am I right in thinking timing chains are usually quite. at 113,000, my mechanic is telling me to either replace the timing chain and components, or get rid of the vehicle, as the engine will eventually fail if this in not addressed. 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. 0 FSI turbo 2007 Removal. This article applies to the Audi A6 C6 (2005-2011). Timing Chain Kit Cam Phaser For 04-08 Ford F-150 F-250 Lincoln 5. Page 1 of 2: How to test for a Broken Timing Belt. 2 TSI has suffered from a similar problem and a while ago, the timing chain was replaced under warranty and this seemed to cure the problem. Every time you use the engine, the timing chain will be used. Gears and chain. Lots of information on the topic, but be prepared to spend an hour or two finding and reading them. Stick the mirror above the camshaft, bent so you can look to the right (i. There is also a 4v used in Navigators but we won't be getting into that here. Symptoms Of Bad Timing Belt. To further complicate matters, other neurological disruptions such as migraines, minor seizures, and low blood sugar can mimic TIA symptoms. Gen II BLAU® Audi A4 Timing Belt Replacement Kits for the 2. Therefore it's going to cost $1800+tax to fix. Please click the link below to see picture number 9 and 13. With patience and some free time, even a beginner can get this maintenance done. The timing chain replacement price portion (TC $2550/ECU $750) seems a bit tall to me for the SV6. This will produce a rattling noise when the vehicle is idling and sometimes while the engine is revved up. Once you notice them, you can bring your vehicle into the auto body shop and have the timing belt replaced. A timing check showed that the engine timing was being thrown off by the slack in the chain. Hook the timing light to any one cylinder and watch the flash illuminate the timing mark. The harder you are on your vehicle (ANY brand) the more problems you can expect. 0 which is experiencing the tensioner failure and I’m being told all my chains are stretched and that my camshaft needs to be replaced. The timing chain tensioner ensures that your timing chain is consistent, efficient, and has enough tension to keep it going. 3liter v6 cpi w engine? The symptoms of a 4. This means that the older your MINI gets, the more vulnerable it is to timing chain failure. Cadillac CTS 2007, Timing Chain Tensioner by Melling®. I presume the Z has a similar chain and will check other posts but is there a history of issues with the timing chain on the Z?. The second thought is, if you are going to employ a system with multiple chains and four separate camshafts the chain you use better be of the highest quality possible. 8L 30 valve models. Although Hyundai uses a single timing belt on its 2. Could the timing chain cause all these symptoms. Timing chain noise or Cam Phaser noise 5. Bmw 318Ci N42 n46 timing chain replacement. A timing chain / timing belt (depending on the engine) as the name suggests is crucial for precise valve timing in engines. i don't think any of the internals were damaged. Hi all, i have a 2007 combo 1. Changing the timing chain on a 3. When the oil has a lot of impurities, it loses viscosity. This means that the older your MINI gets, the more vulnerable it is to timing chain failure. 0 which is experiencing the tensioner failure and I'm being told all my chains are stretched and that my camshaft needs to be replaced. If you notice your engine running rough on idle, or while you are. " It probably is because your not maintaining your car. There are no symptoms of overly advanced ignition timing, late cam timing, there is only a measurement on the light and a mark on the balancer. The timing belt, timing belt tensioner, and fixed idler bearings contained in these kits are the same as those directly supplied to the O. Like hammering them on when doing the timing chain. So the original timing chain was still present and it turned an intermediate shaft that ran a belt up to the V6 heads. Does anyone know a quick way to check if the timing chain has jumped a tooth? 1990 f250 5. Few weeks later, back to square one. view details; apr 20, 2017 - westmont, il - engine primary timing chain wear. Timing chains connect an engine's pistons with the intake and exhaust valves. Can this problem actually cause the timing chain to fail and if it does will this cause. On Friday, it cut out, when my partner was reversing out a parking space at her work, and refused to start. Note: The 2005 - 2013 Triton uses a different part number kit than the 2004 and older ones. Depending on what kit your car requires. 2L V8 equipped vehicles suffering from various stages of engine and timing chain failure, which have all resulted in extensive repairs by our experienced team. If it jumps a tooth, or breaks entirely it can lead to permanent engine damage. In other cases, the timing chain system might be trouble-free if engine oil specifications and change intervals are followed. He took it to the dealer after checking all the fluids. Mine sees red line a few more times a day then yours does. Noticed vehicle using excessive oil. a friend and i are going to attempt to replace the tensioner. A timing chain should last the life of the vehicle. Free Same Day Store Pickup. the cylinder should not be moving up any more @ 0 and start moving down when 0 is pasted. 0 SOHC Ford Explorer Timing Guide (1997 - 2005)By Ralph McKnight Jan 4, 2007. Re: Timing Chain Noise (The Infamous Engine Ticking) Originally Posted by gree-gree well mine is the same noise as that first video, would not make the noise everyday. One bolt, plug and play. The lawsuit alleged that the company installed defective timing chain tensioners in Mini Cooper Hardtop and Clubman models. Nissan Timing Chain Problems. I was just courious. Engine misfires or runs poorly. The preventative maintenance procedures that we discuss on this website are very important. I'm talking about the timing chain. this may be why they say to replace them as a set (to cover the fact that there may be some sort of flaw with the setup). Checking the timing chain tensioner is an EASY DIY! Today I will show you how to check for the older timing chain tensioner that will need to be replaced. This is one of the variable valve timing solenoid symptoms that are also the cause. Even though it is loud, the car will not start. As mentioned above, your timing chain tensioner is a vital part of your timing system. Timing belts, yes, not chains. While you're replacing the timing set, might as well do the water pump too, as well as the belt, and all the hoses. Then watching the distributor rotor while you turn the crank in the other direction. The Volkswagen and Audi timing chain tensioner class-action lawsuit was filed in the United States District Court for the District of New Jersey - David Zimand, et al v. 1 out of 5 stars 49. A duplex (i. 4L 3 valve with variable valve timing outperforms that engine in every way, producing 15ft. The first time they said it was a bad coil and spark plugs. Symptoms of a loose timing chain Whether the timing chain itself has stretched, or a tensioner isn’t doing its job, the result is the same. Bmw 318Ci N42 n46 timing chain replacement. If your timing chain fails before you get your Hemi to the service department for the recall work, the repair may be drawn out over a much longer period of time due to an obscure provision in the. These kits are using superseded/revised parts. Take your time, clean any and all gaskets required and do it right the first time and be done with this. doesn't seem to hard. 0T FSI engine. What I am concerned with now is what I owe the independent shop that replaced the timing chain. Since I'm not even close to a NOVICE on this stuff, i still really do recommend just searching around and making a decision yourself. If you have a stock distributor and know either the timing at idle or the maximum advance at a given engine speed and you have a good timing light, you will have no trouble setting timing. For engines with a timing chain tensioner, a worn chain can become loose enough on the sprocket to rattle whenever the engine floats or cruises between load and coast conditions.