Engine rattle on cold start Although you are not a professional, you can easily detect these causes: piston slap, sticky valve lifter, worn engine, worn bearing wear, and oil-drain back. It never did it when the temps were single Oct 21, 2020 · Maintenance Shop - The dreaded cold start rattle (2017 3. Nov 29, 2014 · There is a Thread addressing this but I see it has dwindled out. This hub brings together the most common Mercedes engine noise and vibration problems, real workshop case studies, detailed diagnostics, and step-by-step repair guidance. Whether the noise appears on cold start, under acceleration, at idle, or while driving, it’s almost always a sign that something inside the engine is no longer operating within normal tolerances. Nov 24, 2023 · Engine knock, also known as detonation, pinging, or spark knock, is a rattling noise emanating from the engine during combustion. They have all heard it, the techs and service Apr 15, 2010 · The TSB is specifically for rattle noise on cold start, if there is no rattle noise on cold start, the TSB does not apply, and the dealership should diagnose the problem to see what is actually causing it. com Google Aug 10, 2015 · If you had the cold start rattle, was just wondering how many more miles you drove it without any other problems. Jul 18, 2019 · Engine rattle cold start 1 reading Jump to Latest 9. This sound results from the air-fuel mixture in the cylinder igniting prematurely, creating a disruption in the engine’s smooth operation. Jan 5, 2025 · Hey guys, new to the thread but here is my issue…07 Silverado LTZ 6. 9K views 9 replies 4 participants last post by joeanderson65 Feb 7, 2022 J Nov 9, 2021 · 2015 - 2020 Ford F150 - Cold start rattle - Hi everyone, Just wondering if anyone might know what this rattle sound is? It’s very present on a cold start or even if the truck has been off for a couple hours. At cold start-up, the engine rattles loudly for about two seconds. Any ideas? Mar 17, 2025 · Hi all, First time poster here. I do Dec 17, 2019 · My '18 Limited had the cam phasers replaced awhile back. 2018 3. 5. Do you hear a rattle from your car's engine on cold starts? The reason is the variable valve timing actuator pin can wear out and not engage when the vehicle is parked. From piston slaps to sticky lifters to worn engine components to actuator damage, many problems cause irritating engine noise. (No rattling) Does the oil pump have to stay primed? Is there a check valve in the Aug 24, 2022 · Are you facing engine rattle issue with your 3. Further, I assume that the oil has drained out because we haven't started the engine for a month. This rattle is getting worse - louder and more often - so am wondering if anyone has this same issue and if it has actually led to an engine failure. So I have a 2017 F150 with the 3. Read more! Jan 16, 2019 · My 2009 Accord 4 cylinder engine started making the rattling noise during Winter on cold starts. I suspect that engine oil is draining away from the VVT Nov 25, 2018 · iRV2 Forums > MOTORHOME FORUMS > Toads and Motorhome Related Towing CR-V engine rattle on cold start-up iRV2. It has been back to the dealer on several occasions for this sound. Engines aren't made to last forever, and a knocking sound or rattling noise on a cold start might be a warning sign for deeper issues. Dec 22, 2017 · Honda Accord rattling noise: Also applies to the CR-V. The noise may go away once the car build oil pressure. 7L EcoBoost Engines The AERA Technical Committee offers the following information regarding ticking, tapping or a rattle on cold start ups in 2019-2022 Ford and Lincoln 2. Sep 26, 2024 · Experiencing a Honda rattle on start-up? Causes & best fixes at Enright Automotive in Alexandria, OH. This brief (approximately 1 second) loud rattle noise (sounds like jerking a chain quickly out of a plastic milk jug) has happened with my 2004 V6 3. My first thought was timing chain, buts that’s been changed recently. But why accomplish automobiles make a rattle bluster, particularly on a cold beginning? Your automobile produces a rattling noise on a stern beginning because at the juncture you crank your machine, there is no lubricant at the lid of the machine. My car started doing that after I changed the oil gallery gaskets. Discover causes, fixes, and tips to prevent long-term damage and costly repairs. (TSB 0087-09). I toyed with the idea of changing the VTC actuator myself. 0L engine from Is your car creating a rattling noise after you start it at the beginning of the day? Perhaps the noise goes off after about 30 to 60 seconds. This rattle Goes away after driving. No messing with valve timing. If the mounts are worn, Jan 15, 2022 · Cold Start - Engine Rattle AFTER about 10 Seconds then gone after 20 seconds. When increasing the revs on a cold start, on the drop back down to idle it makes a horrible rattling noise. Is this a normal cold start sound? SYMPTOM At cold start-up, the engine rattles loudly for about 2 seconds. May 12, 2025 · That cold start rattle? It could mean Noise Timing Chain trouble. On a cold start up I get a slight rattle noise for about 1 second, which then Aug 27, 2019 · The startup clatter/rattle in 3. It doesn't last long at all, really only until the motor fully turns over and its actually running. 6L engines can be addressed by switching to a different synthetic oil. It's not just a pesky noise; it could be the herald of underlying engine issues needing your immediate attention. Noise sounds metallic similar to a timing chain rattle or something waiting for oil pressure and lasts for upto 5 seconds on some start-ups. Nov 2, 2016 · Hello from Oz, I have a 1/2016 2. During startup, the bad bearing will create rattling noise Jun 8, 2007 · engine rattle from a cold start Jump to Latest 25K views 23 replies 19 participants last post by JohnJ Feb 26, 2008 H Nov 29, 2015 · Hello, At 110K km (68K miles) my Toyota matrix (1. Over a period of time the oil inside the chain tensioner cylinder leaks out. It rarely does it at all anymore (20000 miles later). Customers may complain about a ticking, tapping or rattle noise from the top of the front cover area. I just purchased a used 2010 Camry with 4-cyl engine and automatic Trans. Since the car was out of warranty I paid to have it repaired for approx. Has anyone else encountered this issue and know what the cause is?. It only happens in cold start then goes away afterwards. Any Brief Engine Knock/Rattle Noise at Cold Startup (1AR/2AR) Repair Procedure (Continued) lt of the intake VVT gear while holding the camshaft stationary with a wrench. I believe after much research (including on this forum) that this is the M271 block that is prone to issues with the cam adjusters. Symptom at the time was the oft-reported "cold start rattle". which is even less incentive to drop $1k on fixing it. If the problem continues then diagnose and replace the timing chain. Half of the people say that the VTC rattle won't damage your engine. Jan 10, 2010 · Alright, I just bought a 2000 sport 4. This should reduce the rattling noise. 2. ) The engine “rattles” until the oil pressure comes up to normal. All the replies I saw was that most were answered that this was normal due to direct injection system. It only happens when motor is cold upon initial morning start but does occur every morning. Trusted source for Honda cars. 0 234k, at cold start I get the dreaded engine lifter rattle, this started around 210-215k miles. The engine rattling problem is more prevalent during cold conditions, especially during cold starts. This lasts for only 3-5 seconds. Another potential cause could be worn or loose engine mounts. 5TD, I hear a distinct initial engine rattle, after a couple seconds the engine settles to a reasonable sounding idle and runs fine. Morning temps are around 45-50 degrees. Noise seems to be 3 staged Apr 10, 2023 · When I cold start my 6. The dealer put an oil additive in the vehicle to clean the internal pieces. Is the only solution a top end Nov 13, 2013 · I'm wondering if anyone has experienced [from time-to-time] a brief, loud rattle noise for approximately 1 second at cold start-up. Feb 10, 2025 · Key Takeaway A car might make a rattling noise on cold start due to reasons like a loose engine heat shield, an oil problem, a break or tear of the variable valve actuator O-ring seal, or because too much oil has drained back into the pan leaving the bearings practically dry. It doesn't do it when the engine is up to temp and then shut off and turned back on. Common causes include a Oct 20, 2009 · When the engine is started after sitting overnight, the oil pressure takes 3-5 seconds to come up to “normal”. After repairs, the rattle went away. But lately, for the past 4 months it occurs ever time I start the car after not using it for 8 hrs or more in cold or warm weather. Some folks here have said to ignore it, but I struggle with that. Some users have found success using Amazon Basic synthetic 5w-20, while others recommend 5w-30 Pennzoil Syn or Pennzoil Ultra Platinum 5w30. to/3SiOjXd Disclaimer: Due to factors beyond the control of The Offroading Mechanic, it cannot guarantee against unauthorized modifications of May 16, 2018 · I've read that this can be a serious issue in that the rattle is caused by certain engine parts not getting oil at start-up and those parts will eventually fail over time. Need to know what all to replace if I go into it Jump to Latest 4. This is because the engine oil pressure is low. Verify condition by observing engine sound during cold start. Engine Rattles at Cold Start-Up Supersedes 09-010, dated March 3, 2015, to revise the information highlighted in yellow. Each time a friend would complain about cold start clanking/clatter, I would advise them to try my method and they all reported that the noise was gone. There is a rattle noise every time I start the car from a cold start. Service 1. 6 with 85k has developed what I understand is a fairly common rattle on cold start. Learn the causes, symptoms, and why early repair saves your engine (and your wallet). I have had a dealership look at it and the could not get the engine to replicate the noise. Lo and behold there is a Service Bulletin for just this problem: T-SB-0146-10 June 9, 2010 Brief Engine Knock/Rattle at Cold Startup (1AR Jan 23, 2005 · I noticed a rattling noise in the engine on cold start in am. In this video we will demonstrated why this timing chain tensioner was causing our engine rattle noise on cold starts. Below we'll discuss the Oct 11, 2017 · I have had an issue with, generally only on a cold start, it sounds like a diesel with bad injector or a bag of marbles coming from under the hood. It may even be the same parts listed in the TSB (coincidentally), and if they are found to be faulty, they should be replaced under warranty. 0 sohc with an automatic transmission. 5L EcoBoost engine may exhibit a ticking/tapping or rattle type noise from the top front cover area of the engine on initial start-up after a cold soak of 6 hours or more that may last for 2-5 seconds. Ive recently noticed a rattle on my 2. From worn-out parts to lubrication troubles, let's explore the common causes of engine rattles and how you can restore the peace under your hood. If the oil level is too low, it may not be able to properly lubricate the engine, causing components to rub together and produce a rattle noise. Mar 14, 2022 · Every time I start me 21’ JL 2. Seems like possible exhaust leak because it goes away and it seals up after about 15 seconds. Does anybody experience similar problems? Any advise is May 9, 2022 · Below are five factors that make the engine rattle on startup then goes away. Feb 28, 2020 · Engine rattle when cold start and placed in reverse. However, from the various threads on this forum and according to the 3 days ago · So when you start noticing rattling, knocking, vibrations, or abnormal engine noises, it’s almost always a sign of an underlying mechanical or electronic issue. May 24, 2008 · Didn't feel like dropping ~$1k on a possible fix to the cold start rattle noise. The rattle subsides in 15-30 seconds. 32k miles. It seems, I've always associated this sound with diesels. Oct 6, 2023 · Usually when you get a noise on cold start like a rattle that mean your vtc actuator is going out, there's actually a spring inside it that ends up getting stretched out over time and that's why it ends up making that rattle. I have a 4. Why don't the dealers or other mechanics tell you this procedure? Mar 14, 2024 · Has anyone experienced this engine rattle? Video probably doesn’t grab it great, but I noticed it in the last week or so. Amsoil 5W30 is also mentioned as a preferred oil for keeping the engine quiet. #motorcarnut #h The Offroading Mechanic amazon store https://amzn. May 12, 2025 · Learn why your car makes an engine rattling noise on cold start. The rattling noise dissipates after the engine warms up. Keep driving until the engine oil temperature reaches normal operating conditions. I am assuming that this is caused by lack of oil pressure in the VVTI gear. However, the rattle/grinding noise was driving me crazy. Sometime between then and now, the "cold start rattle" returned. I've been noticing a rattling sound when I start up on cold mornings. It has nearly 126k mi on it. Jun 19, 2021 · It just rattle for the fist couple seconds of start up from a cold start (typically sitting over night or when I start my car after leaving work). $600 canuck dollars by the Toyota dealer where I bought Issue: Some 2017-2020 F-150 2018-2020 Expedition/Navigator vehicles built on or before 31-Oct-2019 and equipped with a 3. Jun 27, 2022 · Why does the engine rattle on cold start? A cold start refers to turning your vehicle’s ignition after being idle for long, under 50 degrees Fahrenheit, or as low as zero degrees, depending on the environment. In this article, I’ll discuss engine rattle on startup then goes away – what to do. Jump to Latest 6. Aug 11, 2015 · Production Solution Improved chain tensioner. 7L EcoBoost engines. 2d. Jan 29, 2024 · Rattle at cold start up, goes away quickly. I sounds like the noise is coming from the front engine. Once the engine is warm the rattling sounds goes away. Jul 19, 2019 · I've found this out by studying engine schematics on Mercedes, BMW, Audi, Chevy, Ford, Toyota and even Chrysler products. That plug can arrive out or shear and build a rattling bluster on a stern beginning. If the rattling noise comes from the area of the timing chains (back of the engine) for 1-3 seconds after the first start of the day, replace both upper chain tensioners of bank 1 and bank 2 with the optimized chain tensioners. Cold Start Ticking Tapping or Rattle Noise on 2019-2022 Ford and Lincoln 2. NOTICE Oct 2, 2021 · Bought a couple weeks ago. When you start the engine it takes a couple of seconds to fill up so that sound is the cam chain whipping around inside the timing cover. 5K views 3 replies 4 participants last post by Wes Kootenay Jan 30, 2024 C Dec 21, 2022 · On two occasions, we have noted the dreaded "cold start rattle" when the ICE fires up as we pull out of our neighborhood. I religiously change my oil at 3-5k miles and used mobile 1 full synthetic, Havoline blend and regular havoline with mobile 1 4 days ago · Engine Rattling Noise in Mercedes-Benz: Causes, Diagnosis & Real Case Study Engine rattling noise in a Mercedes can turn a smooth, luxury ride into a source of stress. 2K views 2 replies 2 participants last post by KingSR Sep 4, 2019 Oct 20, 2022 · If your car makes noise when starting then goes away, it's probably coming from your engine components. If your car is acting this way, it may be because the bearing on the starter pulley is already failing. Aug 8, 2017 · Hi, can anyone advise please. I just replaced all timing chain components on my 2011 Elantra, and still have the start up noise, too. Also my understanding is the cause is the hydraulic lifters are leaking down when parked overnight. During a cold start, the vehicle’s engine starts from an ambient temperature, triggering the fuel injection system to Apr 25, 2023 · That unnerving rattle from your car's engine at startup can turn any smooth drive into a bumpy road of worries. Oct 17, 2022 · Hi all, I recently bought a 2009 CLC C180k with the supercharged 1. 8L, 2ZR-FE engine) started having the dreaded rattle at startup when the engine was dead cold. 5L Prem with 12,000km and have noticed a engine rattle for a few seconds after a cold start. Dec 21, 2021 · My 2014 3. 0L Turbo it makes a rattling sound. it eventualy goes quiet and stays that way until it has been stopped overnight. This may be intermittent and occurs when the outside temperature is below 40° F. 5 EB) - Hello all, I haven?t posted in the new member forum yet but I?ll get around to it. 5L Ecoboost engine? Click here for a complete guide to solve cold start! A Toyota Master Diagnostic Technician Shares information on when you should fix your engine cold start rattle and more important things that are often missed Feb 11, 2023 · One potential cause of engine rattle on cold start is low oil level. Oct 14, 2021 · Anyways, don’t recall if it was on this forum or not but some were complaining about engine / rattle noise on cold start when the car was sitting for a while /overnight. After the engine has been run, the oil pressure comes up within a second the rest of the day. 5 Ecoboost. If your Honda makes a nosie/ sound/ rattle on a cold start up, watch this video on how to fix it fast and cheap. May 15, 2020 · Dealing with a Honda Fit rattling noise on cold starts? Learn how to fix the issue with your Honda Fit using step-by-step instructions. (It comes up instantly, not slowly. Doesn’t sound like a chain rattle to me but the dealership says otherwise. 2 V8 X350 which has a sharp rattle lasting about a second on cold start then a loud tappety noise for about a minute. 8 litre engine. It almost sounds The rattle sound occurs because the actuator isn't receiving the proper oil pressure during a cold start, resulting in metal-on-metal contact as the assembly builds up the necessary oil pressure, which is why it's only noticeable at that time. 1 reading Jump to Latest 18K views 18 replies 9 participants last post by hpark21 Sep 7, 2025 Apr 10, 2021 · Is your Prius suffering from a rattle/shake on startup? Take a look at 2 things that cause it and what you can do about it to fix it. msnotd ykfl xwmeey vsrqll hisd kpx wjenpw yytqeu ytsxu xred odkcy bpadg pwhnr nclnuf lyatj