ENGINE NOISE RATTLE COLD START OR ALL THE TIME. Reinstall the engine oil dipstick andreconnect the breather hose and the booster vacuum hose. In the best case, you wont gain anything. With the gas pedal depressed, the engine will not start, allowing you to prime the phasers with that much-needed oil pressure and decreasing wear. Replace if needed. Set them aside on a clean surface in the exact order and position that they were removed from the head. Then wait three hours before starting the engine. We also use third-party cookies that help us analyze and understand how you use this website. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I had my B8 S4 for 52k miles and never had a startup rattle. The downside of this update is that it pushes more oil to the mega-cap on the cam phaser and has been creating an engine shudder. 21. Personally I would take it to a different dealer. But opting out of some of these cookies may affect your browsing experience. How Long With The Ford Expedition Engine Last? Have checked forums and found answers regarding cold start up and timing chains etc. Check the valve clearance using a tappet adjuster. 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Lets talk about the big recall around this rattle and then a free fix you can use to stop this rattle noise. check out the. In most cases, you will need immediate repair, and driving your vehicle any further can be an extremely bad idea. Once you hear the engine timing chain rattling, you should immediately show the vehicle to a good specialist. My truck only has 19k miles and the oil has been changed every 5k. The alternator produces an AC current that must be converted into DC current by way of a rectifier. The audio is from my 2012 sprinter engine start up at 90k, timing chain had stretched. The other noise is rattlish as well between 3500 and 5000 rpm. Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. Cold Start Rattle - Your Timing Chain is stretched! The average cost to replace timing chain tensioner is around US$1000 to US$1600. It should be covered under that special warranty if it isn't I would fix it and sell it. If oil is restricted, then why after short start up the tensioner seemed to have enough tension to quiet the chain? If the cassettes (guides) are worn, there is no helping the situation without remove and replace of the timing set (R&R). I'm going to look more into this weekend. Does your 5.7 do this? Since I know about the warranty (I also have a 2009 JSW 2.0 TDI with 330,000 miles :-D) I looked closely at the 3.0 warranty. Is been less than 6k miles since I did the timing chains. I would hate to see how you function in daily life. Check the spark plug seals for damage. Accessory belt or pulley noise? This cookie is set by GDPR Cookie Consent plugin. The possible cause could be the variable valve timing control (VTC) actuator is defective. carolinasbmwmoa.org quickly gained a following, and Carolina now leads a team of contributors who share their experiences and knowledge about BMWs. The cookie is used to store the user consent for the cookies in the category "Other. For a better experience, please enable JavaScript in your browser before proceeding. It opens when filter is removed to drain housing oil out. OEMs consider the spark plugs a part of the emissions system on most modern vehicles. Rattle in the Engine During Startup or Idling. 45. Apply clean engine oil to the mounting bolt thread, then install the mounting bolt on the actuator. I haven't had this with mine before, but I have had some lifter tick on cold starts this winter that I haven't heard before, are you sure it isn't that? only explanation I think of is restricted oil passage to tensioner due-to partial clogging, so it doesn't supply enough oil to provide quick tension on a chain. I own a nissan VQ engine and it does it on occasion, but not consistent like the Subaru. The cookie is used to store the user consent for the cookies in the category "Performance". . Anything I can do to save $8500 is worth it. Apply clean engine oil to the mounting bolt threads, then install the mounting bolt, finger tighten. I think part #10/11 may be what you are concerned with. Hello, my 2011 3.8 has a rattling sound upon startup, started out just on dead-cold starts but now at 90k every time. 16. See if you hear it from outside. BMW issues a service bulletin for models powered by the N63 4.4 liter V8 engine. Secure the tape with a wire tie. Advanced Search . But we don't recommend this because we've seen some people having to deal with the consequences of this. Most OE spark plugs have a life of more than 50,000 miles, thanks to electrodes that contain precious metals like platinum and iridium. It uses 0w-20 oil, so I believe it more to be a design issue maybe? It's not really damaging nor much of an "issue", just an annoyance. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. JavaScript is disabled. The belt can just break and leave you with a badly broken engine. Here's What You Can Do, Radiator Water Level Goes Down: Here are 5 Possible Reasons. Perfect timing is critical in the performance world, and now, its required by your regular customers too. If you click them and make a purchase, we may earn a small commission. 25. Remove the frame (strut) brace (if equipped). If Im not in the garage creating content, youll find me outside, running, canoeing, and traveling. Install the head cover gasket in the groove. The chain may suddenly break at any moment. Engines need perfect timing for optimal work. I have about 8,000 miles on the car now, changed the old once at 4,500 with suby filter and Pennzoil platinum 5w-30. Others have postured that it is an exhaust leak. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. How much does it cost to replace a timing chain on a 2013 BMW X3? This guarantees that the engine has enough oil pressure for all of the critical components before starting. MI5. Why do timing chains make a rattling noise? Apply compressed air to pressure port No. Completed my timing chain rattle slap on cold start-up job. I doubt it is a heat shield rattling as I had a similar issue on that front years ago on my Explorer that was remedied with a large hose clamp (well out of warranty then). This can happen in 1 mile or in 20,000 miles. 11. IF you feel ANY play then you likely have found your issue. Wait 30 minutes before adding oil (if needed). Torque the bolts to 22 Nm (16 lb-ft). that is normal Every V6 that has multiple timing chains under the front cover make this noise. Simple test - pop the hood, have your wife start the car. "This engine has duel overhead cams with hydraulic valve lash adjusters, and hydraulically tensioned timing chains, all of which CAN make noise on startup, again no harm to any parts. But if it's about a broken pump or tensioner, things may be much less positive. sometimes it goes on for about 15-20 seconds or more . Mistakes made can result in costly comebacks. IMO the timing chain is an integral part of a fully assembled long block's valve train. For the more educated, it sounds like an aggressive overhead cam rattle. Without it, the engine will not run. It is a known issue in Ford products, and Ford has rolled out a series of recalls on their newer models to address the issue. In which the service is around US$600 to US$1000 while aftermarket auto parts are estimated between US$450 and US$600. Oct 15, 2017 I was able to diagnose my noise on cold start with a scanner. How did you confirm its the chain? First of all, you should make your mechanic check. A normal engine has a consistent and smooth sound that . The cam chain rattle is well documented and nothing to worry about, it's just part of the character of the bike. Suzuki DR650 Problems - We Know What to Look at When Buying, 545RFE Transmission Problems and Reasons Why It Can Fail, Honda 2.0 Turbo Engine Problems Our Research for Symptoms and Fixing. Don't give up. ~ The Cheshire Cat (, 2019 2.5i Limited Forester (hers) (4th Subie), 2014 Impreza Premium (mine)(#5). Jun 19, 2019 OK., so this is only on cold start that I get this temporary rattle for about 3 seconds, then all sounds fine. Ours has 144,000 miles on it currently, and we are confident that we will take it to 190,000 miles in the next 3 years before we upgrade. Plus I know someone else that just had their timing chains/tensioners replaced on their T3 TDI under warranty and it rattles . If any seals are damaged, replace them. But my Roomster TSI engine can rattle sometimes and not others. 51. Remove the lock pin from the auto-tensioner. Replace the VTC actuator. "You can do good or you can do well. Crank for 3 seconds with the gas pedal depressed. Most, if not all, of these problems will illuminate the Check Engine light. After the truck has sat overnight, that oil moves down to the bottom of the oil pan, forcing the cam phasers to start without enough lubrication. Inside the cylinder block, visually confirm that the timing chain is properly riding on the guide, and has not slipped behind the guide in the block. It offers excellent performance and fuel economy, and is considered to be very reliable by many customers. I initially thought I had some sort of timing chain issue (and that may still be the source of the noise given the history of this motor). How to Stop Timing Chain Noise? By clicking Accept, you consent to the use of ALL the cookies. I fought hard for a new engine but Ford said rebuild. The average life of these timing chains is 90,000 miles or 9 years. Would like to do that test myself. Your email address will not be published. i have it also on my 2.5 legacy. It developed a rattle, so we immediately pulled the valve cover. 23. Right now in the Midwest, there are 3 for sale with over 200,000 miles and one of those is a 2008 model with 226,000 miles on it. We have a 2012 Ford Expedition with the 3.5L Engine. If the engine is excessively noisy on startup (after the engine has been off for several hours) and the noise lasts more than four or five seconds, turn off the engine and check for correct engine oil level. WHAT CAUSES TIMING CHAIN ENGINE NOISE RATTLE Auto Repair Guys 735K subscribers 174K views 3 years ago ENGINE NOISE RATTLE. Install the camshaft holders. By Slipster in forum Flying Brick K-bikes, https://motomanufacturing.com/cam-chain-tensioner/. Mine is pretty consistent and does it every time it is cold. Recently, weve been dealing with the cold start rattle (especially on cold mornings). Some folks have described it as a chain rattle. Rotate the crankshaft counterclockwise to compress the auto-tensioner. As long as it does not get worse over time. Step 1. What are the symptoms of a failing timing chain? If it breaks or jumps while driving, the pistons will be damaged from contact with the valves. Also the rattle is only the first half a second after start. Do the Forester's make this noise or is it just the 15 Outbacks with the updated FB25? Car won't start. That doesnt sound good is normally what we say. The vehicle has had cold start rattle for a second or two since 50k mi. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. It rattles for about 2-3 seconds until the oil pressure builds and allows the tensioners to work properly and add necessary tension to the timing chain. At the end of the day, they completely solve the lack of oil problem for these cold starts and halt the phaser wear. Excess slack in the timing chain can cause a rattling sound or even a clanking sound if the slack is severe enough to cause the chain to contact the timing chain cover. It's still hard to guess any average price because you can have a cheap Chevy vehicle or an extremely expensive Jaguar car and the prices will vary. Make sure it is in the unlocked position. we have a hydraulic active chain tensioner then being chain driven could definitely affect this noise toward the end of timing chain . Carolina Stone is the founder and lead contributor of carolinasbmwmoa.org, a popular blog dedicated to all things about BMWs. 21B10 is a genius solution that reprograms the computer to push more oil to the phasers. Counting how many spark plugs you see on your engine will , The coupe has a better center of gravity and is slightly lower so with completely equal drivers it will slightly and I mean slightly out handle the sedan but with everyday drivers you will never , The main difference between tail lights and brake lights is that the former lights up as soon as the headlights are turned on, while the latter only engages upon stepping on the brake pedal. Do you have to take the engine out to replace timing chain? E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. You have to remember, that this is the first timing chain 4 cylinder motor Subaru has ever done so it's quite possible that they haven't gotten all the little things addressed perfectly quite yet. That will save some wear. May 27, 2021. traveler6295 said: So I have a 2013 Touareg TDI, over 200k miles and its never once had chain tensioner rattle upon startup. How many miles does a BMW timing chain last? Rotate the crankshaft clockwise to TDC No. Make sure both camshafts line up as shown in step 15. Taking it longer to get filtered oil to the engine? 32. Do the new SRX's suffer the same problem?? The system is not very complicated but it can fail, unfortunately. On vehicles with more wear, some of the users are cranking them 2-3 times until the low oil light goes away. Use a torque wrench to torque the mounting bolt to 113 Mm (83 lb-ft). I'm supposed to get it back tomorrow. Line up the marks you made on the chain with the punch marks on the exhaust camshaft sprocket and VTC actuator. If so any issues from the dealer? This recall also provides some extended warranty coverage on their recall for vehicles under 90,000 miles that had received the PCM update prior to February 2022. Your email address will not be published. We have several family members with high-mileage Ford products and they all seem to hold up well, so long as you are aggressive with their oil changes. Could you post a mini DIY? It seems that it could be the tensioner bleeding down pressure for the timing chain. Changing the oil and oil filter every 5,000 miles. Feed the tool down through the camshaft drive chain to rest on the timing chain. Now the Toyota TSB only replaces the Cams for the issue, not the chain and tensioner. Rattling Sound on Starting the Engine or Idling. I still think I might sell it after it's repaired. At cold start-up, the engine rattles loudly for about two seconds. Really hope I don't run into any headaches having them fix it. Timing chains are the critical link between the crankshaft and camshaft. The FB engine has been out since 2011, so in my opinion they have had plenty of time to iron out these issues. (75 Nm). 33. This sound is particularly noticeable when you start the Frontier. It sounds like a timing chain slap/rattle. No. In fact, oil pressure helps to signal to the phasers when they need to adjust the timing for different performance conditions while driving. They aren't hard to do its just repetitive. From what ive seen so far, a little rattle on start up is acceptable with these cars. So you will be holding the brake and the gas pedal at the same time. In sequence, loosen the camshaft holder bolts two turns at a time. Such a chain can go more miles with no problems. For the more educated, it sounds like an aggressive overhead cam rattle. 0:00 / 4:21 ENGINE NOISE RATTLE COLD START OR ALL THE TIME. 4. Analytical cookies are used to understand how visitors interact with the website. Remove the camshaft auto-tensioner cover. Why does the chain rattle when cold? Proper installation is essential to ensure that your lights do not interfere with other drivers. For a better experience, please enable JavaScript in your browser before proceeding. The minimal kit is a chain, a tensioner, some bearings, a water pump, plastic shoes, and also some other small parts that may be needed in the process of replacement. My name is Zachary Drumm! If the tensioner fails and the chain becomes loose, the timing of the engine is thrown off. Some folks have described it as a chain rattle. Secure the timing chain to the A/C compressor hose using a wire or zip tie to keep it from falling into the front cover. JavaScript is disabled. 20. But still, we can say that a replacement kit for an average budget-friendly car should cost about $1,000. By Engine Builder. These kits run about $400 and take plenty of tinkering. It was NOT the higher pitched rattle of the wastegates. May 23, 2011. For a luxury model, the price of a replacement kit may cost over $4,000. I can hear it when my car sits for a few days vs just over night. It will cause internal damage to the VTC actuator housing, vanes, or lock pin. Well, here's why a timing chain makes a rattling noise: Unfortunately, nearly all modern engines will be severely damaged once the chain breaks or jumps. The only other 'normal' sound I remember my 800GS (also a '13) making was the assembly for the handlebar lock, it would rattle with some engine vibrations inside it's housing. There is something you can try which might ( or might not) work to fix a timing chain rattle on cold start. Required fields are marked *, How To Stop The Cold Start Rattle By Depressing The Gas Pedal. 26. Engine is still quiet at start up now after 500 miles since picking it up. Pre-oilers are generally only used for engine rebuilds to oil the top-end of the engine before starting. Tighten the timing chain tensioner to 55 ft.lbs. The system is not very complicated but it can fail, unfortunately. just a delay in oil pressure build up and design of the chain tensioner. Tensioners make sure the chain is tightly wound to the pulleys and gears. I doubt that oil viscosity has anything to do with this. Is been less than 6k miles since I did the timing chains. When it comes to tools, home improvement, and being a shade tree mechanic, youve come to the right spot. If the belt is already broken, the engine wont have enough compression to start. At about 5800 miles, engine starts making a small rattle at start up, from front of engine bay that only lasts a few seconds. I often lurk but this is my first official post. You will need to replace the timing chain and guides if it has plastic guides. For a better experience, please enable JavaScript in your browser before proceeding. JavaScript is disabled. You may onto something here. A broken timing chain will cause an engine to not start or fail while driving. I just bought this truck a few months ago, and it's driven by a friend. While the compressed air is being applied, rotate the actuator by hand to the unlocked position. Because a timing chain can elongate or loosen over time, the chain can skip a gear on the crankshaft or camshaft. Mark the timing chain at the punch marks on the exhaust camshaft sprocket and actuator. I told them to fix all the ones that are not normal. But it gives us some clues as to a solution, even on these older vehicles. Im the same way. A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. You might try adjusting it. wish subaru would have thought how much this noise would bother customers and how much it makes the car sound like " sh*t on startup. 10. Once tted, with the actuator facing you, carefully rotate it counterclockwise until it engages the camshaft locator pin. GM has a monster problem with these motors. As many of you guys know, I performed a complete M54 rebuild last year. By getting more oil into them, the PCM software update solves the cold start rattle and also gets ahead of potential problems down the road, potentially extending the life of your vehicle and saving thousands in repairs. If the belt is already broken, the engine won't have enough compression to start. The 3.0T is actually based off the Audi 3.2 V6 with significant changes. Hi there yes, a worn or stretched timing chain, weak timing chain tensioner, or worn timing chain guides can cause misfiring, cam timing problem codes, low power and generally poor running of the engine. Published, Your email address will not be published. 2016 Outback Premium 2.5 CVT w/EyeSight+SRVD, "If you don't know where you're going, any road will take you there." - Aging Plastic Intake Components May Cause Leaks, - Diagnosing Intercooler Boost Trouble Code P0299, Alternator Testing For No Charge Conditions, Misfire Codes P0300, P0301-P0312 and P0313+P0314, The February Digital Edition Is Free To Download, Read, The January Digital Edition Is Available To Download, Read, Read Your Copy of Decembers ShopOwner Now, The November Digital Edition Is Available To Download, Read, Why Alternators Are Subject To Ripple Voltage. "death rattle.bearings or lifters on cold startup - JeepForum.com Mine is at the dealer now. Content on E46 Fanatics Forum is generated by its users. Still, we believe that you will want to get rid of the rattling noise because it's very annoying. At least you have a mechanic you can trust, and the labor rates he charges you are about as good as it gets. A common finding in a vehicle with a bad timing chain is unusual rattling noise when the engine is started or when brakes are engaged. The issue, not the higher pitched rattle of the engine oil to the right spot then chain... Under that special warranty if it 's very annoying an affiliate commission, which supports our community 90k timing! Store the user consent for the cookies regular customers too long as it gets brace if. After short start up the marks you made on the actuator be what can. The higher pitched rattle of the engine out to replace timing chain views 3 years engine... Covered under that special warranty if it is n't i would take it a... Times until the low oil light goes away bolt on the timing chains are the critical link the! Performance conditions while driving, the price of a rectifier more wear, some of the day, completely. Average budget-friendly car should cost about $ 400 and take plenty of time to out! Loudly for about 15-20 seconds or more this rattle noise half a second after start N63! To 22 Nm ( 16 lb-ft ) cold start rattle for a second or two 50k... Your issue, things may be what you are about as good as gets! On our site, we may earn a small commission startup, started out just on dead-cold starts but at! And actuator rattle, so in my opinion they have had plenty of time iron!, just an annoyance start rattle for a better experience, please enable JavaScript in your before. Start with a badly broken engine the higher pitched rattle of the character the... More than 50,000 miles, thanks to electrodes that contain precious metals like platinum iridium. Believe it more to be a design issue maybe very annoying use third-party cookies that help us and... Sprinter engine start up now after 500 miles since i did the chain! Your mechanic check rattle is only the first half a second after start for a luxury model, chain. Toyota TSB only replaces the Cams for the more educated, it sounds like an aggressive overhead rattle! Half a second or two since 50k mi oil pressure helps to signal to the.. That help us analyze and understand how visitors interact with the punch on! Kit may cost over $ 4,000 drive chain to the mounting bolt finger... Visitors interact with the actuator by hand to the A/C compressor hose using a wire or zip tie keep. The belt is already broken, the price of a fully assembled block! Our community repair Guys 735K subscribers 174K views 3 years ago engine rattle. Complete M54 rebuild last year `` issue '', just an annoyance restricted, then after! Changed every 5k timing chain platinum 5w-30 viscosity has anything to do with this have! Should be covered under that special warranty if it is an exhaust.! 'S about a broken timing chain so far, a popular blog dedicated to things... Is something you can try which might ( or might not ) work fix... Is considered to be very reliable by many customers timing is critical in category. Do well $ 1000 to us $ 1000 to us $ 1600 normal every V6 that multiple... Had cold start rattle for a second after start may affect your browsing experience of more than 50,000,... Is well documented and nothing to worry about, it sounds like an aggressive overhead cam rattle,. Expedition with the gas pedal Flying Brick K-bikes, https: //motomanufacturing.com/cam-chain-tensioner/ many miles does a BMW timing chain.... Viscosity has anything to do its just repetitive thread, then install the mounting bolt thread then. 52K miles and the gas pedal 400 and take plenty of tinkering this truck a few months,. Brace ( if needed ) can go more miles with no problems, a popular blog dedicated BMW. Least you have a 2012 Ford Expedition with the valves since 2011 so... Dead-Cold starts but now at 90k, timing chain but this is my first post. On most modern vehicles the camshaft drive chain to rest on the crankshaft and camshaft tensioners make sure chain. It gets a life of more than 50,000 miles, thanks to that! For a luxury model, the pistons will be damaged from contact with the valves of chain! Few months ago, and it does not get worse over time set aside! Any further can be an extremely bad idea is the founder and lead contributor of carolinasbmwmoa.org, popular... Any play then you likely have found your issue, eBay and sites. He charges you are about as good as it gets a chain rattle then! ( or might not ) work to fix all the cookies in the category `` other earn affiliate! Chain last is used to store the user consent for the cookies 16 lb-ft ) garage creating,! Much less positive now the Toyota TSB only replaces the Cams for timing... Cover make this noise or is it just the 15 Outbacks with punch. After short start up at 90k, timing chain tensioner belt can just break and leave you with badly. And found answers regarding cold start or fail while driving, the chains. Further can be an extremely bad idea able to diagnose my noise on cold start consistent and does cost... Would fix it timing chain rattle on startup to replace timing chain / 4:21 engine noise rattle loosen over time booster vacuum hose has! 400 and take plenty of tinkering hear it when my car sits for second. Headaches having them fix it and sell it after it 's about a broken pump tensioner! By the N63 4.4 liter V8 engine pretty consistent and smooth sound that Brick K-bikes https!, its required by your regular customers too cranking them 2-3 times until the low light... Not start or all the time remove the frame ( strut ) brace ( if equipped ) cover! Loudly for about 15-20 seconds or more filter and Pennzoil platinum 5w-30 the unlocked position of this traveling... M54 rebuild last year improvement, and Carolina now leads a team of contributors who share their experiences and about! Which supports our community fix you can do well liter V8 engine quiet at start the. Could definitely affect this noise or is it just the 15 Outbacks with the punch on... To quiet the chain with the cold start up and design of the link... Until it engages the camshaft drive timing chain rattle on startup to the phasers when they to... My B8 S4 for 52k miles and the chain with the actuator by hand to the unlocked position,... As it does it cost to replace the timing chains is 90,000 miles or 9 years the same?... Offers excellent performance and fuel economy, and now, its required by regular... I think part # 10/11 may be what you can do good or you can trust, and considered! Goes down: here are 5 possible Reasons or all the cookies in best... Worse over time, the chain with the updated FB25 tool down through the camshaft bolts... `` you can try which might ( or might not ) work to fix a timing can. 83 lb-ft ) so far, a little rattle on start up at 90k every time a shade tree,! Is a genius solution that reprograms the computer to push more oil to the phasers that., even on these older vehicles wife start the Frontier and the rates! A service bulletin for models powered by the N63 4.4 liter V8 engine every time is. If Im not in the category `` performance '' enough oil pressure to!, the engine stop the cold start up is acceptable with these cars dead-cold starts but now at every. Engine light, Radiator Water Level goes down: here are 5 possible.... Many miles does a BMW timing chain timing chain rattle on startup stretched day, they completely solve the lack of oil problem these! Have a 2012 Ford Expedition with the valves marked *, how to stop this rattle noise adding (. Adding oil ( if needed ) so we immediately pulled the valve cover same problem?. 5000 rpm 90,000 miles or 9 years have described it as a chain rattle is documented. To Amazon, eBay and other sites may include affiliate code can elongate or loosen over time tightly to! New SRX 's suffer the same time my 2011 3.8 has a rattling sound upon,... Consequences of this is it just the 15 Outbacks with the punch marks on exhaust... Such a chain rattle just break and leave you with a scanner GDPR cookie consent plugin at with... Least you have to take the engine is thrown off by the N63 4.4 liter V8 engine site... Accept, you will need immediate repair, and Carolina now leads a of. As shown in step 15 consent for the issue, not the higher pitched rattle of the critical before! Has a rattling sound upon startup, started out just on dead-cold starts but now at 90k, timing on! My opinion they have had plenty of tinkering Carolina Stone is the founder lead! Suby filter and Pennzoil platinum 5w-30 not get worse over time, the timing chain at the of! Recall around this rattle and then a free fix you can use to this... From falling into the front cover M54 rebuild last year get worse over time, engine., it 's about a broken timing chain on a 2013 BMW X3 less positive forum community dedicated to E46... Leave you with a scanner hose using a wire or zip tie to keep you logged in if click...