On automatic transmission vehicles, the flex plate connects the engine to the transmission. it,s a lifter not pumping up right away. I currently have a 2015 ram 1500 5.7 with 45000 miles and when I start the car it makes this ticking noise that comes from the passenger side. Yeah, I wouldnt be satisfied either. I cannot say for sure that the tapping/rattling noise under load is from the engine, however, I have confirmed that the start up noises seem to be loudest at the oil pan (as opposed to heads). My car 2004 Chevrolet Classic with 193,000 miles on it started knocking. No - ^ If you hear a different noise, continue with normal troubleshooting. Start engine and run another 30 minutes. But once it warms up a bit the noise goes away. sounds like its in the oil pan but also in the cams too. I believe it was the hydraulic lifters that got gunked up and the MMO freed it up or cleared away the passages or something. Happy Thanksgiving. It is the timing belt tensioner. I put in Lucas oil treatment and replaced the oil filter with a Fram PH-5. Just take it easy at first until the engine is fully warmed-up before trying break a 0-60 record.. LOL. The tensioners are hydraulic with a ratcheting detent system to keep the correct tension when the engine is shut off. 2. If the detent pawl is broken, the tensioner will collapse fully when there is no oil pressure, causing the excess slack that is taken up immediately once the oil pump builds pressure and the tensioner piston extends (which makes the noise go away). Have the same exact issue of knocking during cold startup and goes away. Run 5w-30 in the engine to help the cold oil get thru the little spaces. Return the engine speed to idle and verify if the knock returns. 70% of it goes away after 3 seconds and then light tapping continues for about 30 seconds to 1 minute in warm weather. It does this when the engine is cold. would changing the oil to 10w30 get rid of the noise? At the center of the plate, bolts connect to the crankshaft. Are you talking a loud clatter for a brief second at start up? I too have a Yukon with this loud clicking noise upon start up of my vehicle. Re: 2.9 start up knock -----"OK, here's the latest on my start-up noise. White smoke when startup - White smoke coming out of the exhaust engine can signal a serious problem with the vehicle except the 2-stroke engine. If you were knocking real bad from detonation it would always be there and would not be affected by engine temperature. Have the same exact issue of knocking during cold startup and goes away. My wife says the Dealership told her that she should only replace it with a new water pump. Some vehicles equipped with a 4.6L, 3-valve or 5.4L, 3-valve engine may exhibit a ticking and/or knocking noise after reaching normal operating temperature, or may exhibit a rattle upon starting. The loud sound is now gone during cold startup but i can hear a very slight knocking still during cold startup but goes away after warmup. Yes it was similar to mine, and it was only noticeable after the truck sat for a bit. Replaced the timing belt with entire timing belt kit. Replacing the lifter and adjusting the valve clearance will make the rattle go away. Sometimes its really bad and sometimes unnoticeable and lasts between 10-20 seconds then goes away. The noise can go away once the parts are properly lubricated. The noise may also be described as ticks, taps, knocks or thumps. The first and most reoccurring problem is the knocking on a cold start. If I press the accelerator (when in park) the knocking goes away, and if I let off the accelerator then it comes back. im used to my ls series motors where it's a given chevy thing. Thanks, yeah its driving me crazy trying to figure out what it is, so timing chains tensioners can make the same noise? 95 toy pu engine knock or lifter problem, 177k, 4x4, 3.0L, at start-up engine noise, then goes away? Vehicle Won't Start or Engine Noises Main Bearing Noise. On start-up, do you hear a loud engine rattle that lasts about 2 seconds? To be safe, it would be a good idea to have a local ASE certified mechanic complete a routine inspection to diagnose the exact cause of the engine ticking sound. I have been driving like this for 2 years now. kcjeff Posts: 4. Stop engine and immediately drain crankcase. It knocks more noticeable in reverse. Or ping. In some cases the noise may be a normal characteristic of these engines. From my experience with working on Toyotas, and owning a 4Runner myself, I would first check the belts and pulleys for wear. A drained down lifter or two would not happen every time due to the engine’s camshaft stopping at various positions. the under sized pistons would heat up expand and the knock would stop on most ,,,, but not all. Refill with FIVE quarts cheapo 10w30 and one QUART MMM. If it's the typical 5.3 cold start ticking noise that goes away after few minutes it's a fuel knock when you start engine when it's cold it runs on cold idle circuit which richens fuel mixture that creates fuel knock they all do it just some more noticeable Sign … Recently i went to start it up to go to work and it made a noise similar to a bad lifter but a little louder . Dwight Curr on . This used to jump, or not register at all until I wiggled the engine sensor. All the ones I see are at least a few years used, near 100k on them, and are still noisy even after the startup rattle goes away. Thanks to all who made suggestions. My Tl make a loud knocking sound when I first start it up in the morning or after being parked for at least 6 hours. The noise can go away once the parts are properly lubricated. Well a rattle sound when a car first starts then fades away is usually either lifter clatter or rod knock. After nearly $10,000 in reman engine and additional parts including multiple head replacements (all under warranty), GM is set to officially say that the start-up noise is not detrimental to the engine. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Is that what you're talking about is the knocking noise? http://s669.photobucket.com/albums/vv55/greendurango/?action=view¤t=0709130337.mp4, http://www.zshare.net/audio/92725240b36def80/, Bring engine to operating temperature then shut off, Drain oil thoroughly and change filter for one of the cheapos. I want to get a rebuilt water pump because of price. (This is just a 'final flush' to get rid of the kerosene.) If a car of mine made noise like that, I’d go to almost any length to fix it because it isn’t “right” even though I do honestly believe its … The 4.7 is OHC.. If it's the typical 5.3 cold start ticking noise that goes away after few minutes it's a fuel knock when you start engine when it's cold it runs on cold idle circuit which richens fuel mixture that creates fuel knock they all do it just some more noticeable . that happens when people don,t keep their oil changed. 10 pilot. So far they have changed the lifters, cam shaft, and did an oil consumption test. So once you remove your dangling jewelry, tie back your hair, and put on some old clothing, start scoping away. hello experts, i solved the rear spring clunk now i got a knock in my 2002 4.0L with 110000 miles on it, it seems to be only on startup, it tends to go away after about 5 minutes of driving, i dont believe it increases with rpms, or at least its inaudible due to the normal engine noise. Engine knocks and rattles on startup. How engine knock occurs. Observe what comes out - it will still be nasty but should be much lighter in color. The loud sound is now gone during cold startup but i can hear a very slight knocking still during cold startup but goes away after warmup. Maybe a tensioner is bleeding down? Not seeing any loss of power or any other symptoms relateing to this. Seems to be a design flaw. It doesn't hesitate at higher speeds like it did previously. Damaged or worn main bearing noise is revealed by dull thuds or knocks which happen on every engine revolution. So if I start it then leave it for an hour or so and I start it again, I usually don't hear any knocks unless it is extremely cold. The only bad data is the fuel trimm, right after start it goes to +26, then it decreases gradually to 0 during 1..2 minutes. In some cases the noise may be a normal characteristic of these engines. thanks. In this case, a 1995 Grand Prix. Definately a design flaw from honda. It doesn't have lifters.. ahh yes. Allow the engine oil to drain from the VTC system by not starting the engine for at least 6 hours. Then I changed my engine oil (just because it was time for it), and the tapping went away. does anyone know for sure? When you mash the accelerator out of the parking lot, that’s when you hear an engine knocking sound. But it's far from a knocking sound, especially one that goes away moments after a startup, which would make me nervous. When you mash the accelerator out of the parking lot, that’s when you hear an engine knocking sound. If you want to get involved, click one of these buttons! , after engine warms or after a short drive, engine oil pressure gauge at bottom & engine noise exist's, changed oil twice, 2nd time w/30w oil & another new filter, same problem. (summer or winter) After the engine is warm the noise stops and the engine runs like when I first bought the car 4 years ago. But I could not find the exhaust leak and it sure sounded like the tapping was coming from the manifold. The radiator reservoir was empty so I filled it. My engine started making a knocking noise lately when I start it for about 20-30 seconds. I did notice that the engine seems to run smoother. It does get quieter as the engine warms up. Stop engine and immediately drain crankcase (thoroughly - let it drain for a while so anything in the top of the engine has a chance to drip down). Once it warms up its drive like butter with no noise. This is because the two stroke engine have back up oil which normally enters the fuel chamber to lubricate the piston. From the few people I have talkd too they all suspect its a valve sticking. Come join the discussion about modifications, troubleshooting, towing capacity, maintenance, and more! I have a 99 Yukon 103,000 miles and have had it 2 years. The water pump in my Yukon XL is going out. My oil clearances are 0.003 mains and rods.20 over JE/Eagle setup polished/balanced crank. If the noise(s) you have been concerned about go away during a purge, then you can breathe easy. Eventually it goes away but will return, usually when I'm stopped at a - Answered by a verified Audi Mechanic ... then when engine r ... My 2003 Audi A4 1.8T is making a loud whining noise when I turn the car on and then goes away after about a … I believe it was the hydraulic lifters that got gunked up and the MMO freed it up or cleared away the passages or something. from what I read there is a couple of special tools needed for the job? I have a 99 Yukon 103,000 miles and have had it 2 years. Remove the engine's valve covers and check for broken or bent components. What Rod Knock or Engine Knock Sounds Like. Dealer said that "pistons are shorter on Yukon causing this piston slap" stated that GM sent memo's out that repairmen are not to even attempt to repair problem and that this is "normal" engine sound for the Yukons. Is this something that I … Sign in to reply. BMW Engine Malfunction Reduced Power Problem warning is a common problem that affects BMW models, including 335i, 535i, 745i, X1, X3, X5. This results in oil leaking into the combustion chamber and getting mixed with fuel that is to be burnt. Well this is what cold engine knock sounds like (on an older vehicle). if you have mechanical lifters you can adjust the rockers. Rod knock or a spun rod bering(s) will be there all the time no matter what the engine temperature. I discussed it with local dealer, and got the usual speech about the issue of using genuine AC/Delco filters, etc, which oil was I using, etc.. What they did not realize is that I always use OE oil filters on every engine and never go over 3500 miles before changing. It eventually becomes relatively quiet after a minute or two. Nowadays, my engine starts only after 4..5 failed starts. Another possibility is piston slap but that would likely take a little longer to go away as the pistons heat and expand. Hard knocks that happen at startup and go away quickly are a sure sign it is an early failure and oil related to a rod or main knock, piston slap against the cylinder wall and wrist pin knocks will persist after warm up and get worse with engine rpm. Subject: cold engine knock IP: Logged Message: when i start my truck in cold weather it knocks real bad for about 3 minutes then after engine is warm noise goes away. Hard starts when engine is cold. I hear some knocking when I start the engine. Let us first start with the noise the 4Runner makes upon startup, that noise that goes away once you start driving. Lifter clatter at start up then oil gets to them and quiets down. Two questions to ask yourself before you begin: Is the sound definitely coming from under the hood? Some vehicles equipped with a 4.6L, 3-valve or 5.4L, 3-valve engine may exhibit a ticking and/or knocking noise after reaching normal operating temperature, or may exhibit a rattle upon starting. The audio is so compressed I can't pick out any weird sounds excepts a couple faint knocks on start up. It takes a trained ear with a stethoscope to diagnose this problem with any accuracy. no ! Say the clock has struck 5:00 and you make a bee-line to your truck and take off for home. The knocking lasts for maybe 20-30 seconds. Replaced the timing belt with entire timing belt kit. Radio head unit illumination will go out intermittently. Almost sounds like timing chain noise to me...but I don't know why it would go away so quickly. Change oil filter for your regular quality one. Timing Chain rattle, same thing for timing chain adjuster. You'll need to find the engine oil dipstick and see if you need to add oil or if the oil level is up to the full line. To be safe, it would be a good idea to have a local ASE certified mechanic complete a routine inspection to diagnose the exact cause of the engine ticking sound. Is this normal.” the dealership then told many THIS IS … Misadjusted belts. Start the engine, and immediately listen for a loud rattle. It has a timing chain, and the engines use 0-20 synthetic oil. If yours goes away after it's warm and it's a new noise that increases with rpms I'd get the exhaust manifold bolts checked first off- that's real common on these things. This condition disappears when go back to Mobil 1 5W30. i just rebuilt the top end of my 2.5 in my 95 dakota sport it made this cold engine noise before i rebuilt the top end if anybody knows what noise this could be please let me know I my case, (F-150, 153k miles ), I thought for sure it was an exhaust leak because it would tap loud on cold day startups and then go away after the engine warmed. Now 156K, it may have gotten slightly worse over the years but clears in about 30 seconds. Check your transmission inspection plate it vibrates . (The same thing can happen when you run high quality waste vegetable oil in a diesel.) This is likely due to either pre-ignition or detonation. In my opinion, its a non-issue. There shouldn't be that much slack in it. There shouldn't be much gunk left in the engine at this point, so what comes out should be much lighter than before. I parked it. It started after 600kms. is that the tensioner thats gave out? JavaScript is disabled. Cracked Flex Plate . This could mean the car is low on oil or there is a problem with the oil delivery system that needs to be repaired. If you find that the engine had bent pushrods, worn out lifters (or lash adjusters on an overhead-cam engine), damaged or worn out rocker arms (cam followers on an overhead cam engine) or worn out valvesprings, then you'll need to replace the affected components. Not sure. Does the engine tick more in the morning, and seem to go away when you start driving or does it tick all the time? Interestingly when I put the truck in Drive the noise goes away immediately. Refill with four quarts kerosene, one quart cheapo 10w30, and one pint MMM, Start engine and run another 30 minutes. Seems to be a design flaw. My Tl make a loud knocking sound when I first start it up in the morning or after being parked for at least 6 hours. It's very possible. After the car has warmed up, the sound goes away. If your engine develops a ticking or knocking noise in a short period, the first thing you should do is shut off the engine and check the oil level. This morning: Assessing the Damage . 1. Is there a difference between new and rebuilt? The first and most reoccurring problem is the knocking on a cold start. Seems like if that was the case it would be a constant slap instead of getting quieter as it warms up..... My Yukon has done the same on cold start since I bought it at 44K miles. 99 Yukon making scary engine noise at start up then goes away. and the noise also increases when rpm increase. I got around to pulling the pass side valve cover off this morning, the inside of the head is really clean, no sludge or build up, the rockers are intact, BUT I found a problem I think, it the pass side timing chain it seems to me like there's a LOT of slack in it, I made a video check it out tell me what you think, is this normal? I had more mechanical noise on the Mopar oil filter than the M1 also but mine starts 1:45-2:00 minutes after morning startup. (summer or winter) After the engine is warm the noise stops and the engine runs like when I first bought the car 4 years ago. As I am aware this is a widespread problem but nobody has a definitive answer to solve this. I have a 2007 Denali, the engine does the same thing when its cold, but once warmed-up, all is fine. ok here is the issue, in the mornings or when i let the car sit for awhile i go out to start the car up it makes a loud knocking noise then goes away, but when you raise the engine rpm up to about 1,500/2000 rpm the knocking get's louder sounds like it coming from the passenger side of the car. Start engine and run another 30 minutes. There are many reasons for noise immediately upon starting and shortly after: Valve train noise, it takes a while for the lifters to “pump up” and provide the damping. If you start it right back up it's not there. Running 10-30 in the US spec engine is going to wear out dual VVT-i and oil pump much quicker than the specified 0-20 oil. (This was addressed in another question, but returned) Oil pressure varies greatly. It then goes away and runs smooth and quiet. Most of warm starts it starts up fine. When from a cold start I get this annoying startup rattle for 1-2 seconds then it’s gone. I know JE pistons are common for piston slap. I'm just not satisfied with this explanation. So I was leaning towards piston slap over oil starvation. Not sure. I have a GM dealer in the family and will inquire about GM's practice on notifying dealers and dealers' retention requirements of such communications. Cold Start ticking noise then goes away Discussion in 'Engine & Performance ... Once in a while I get lifter clatter if I park downhill for extended periods but it only lasts a second or so then it's gone. BMW Engine Malfunction Reduced Power message comes on when the engine computer (DME module) in your car detects a … Your car is idling and you’re impatiently waiting, listening to engine noise. Yes - Go to REPAIR PROCEDURE. Most cold starts it make the sound for 30sec- 3 minutes. Nothing seems to make it go away. Stop engine and immediately drain crankcase. I have seen references to a condition called "piston slap." After the car has warmed up, the sound goes away. For a better experience, please enable JavaScript in your browser before proceeding. Though to be knocking that bad from purely detonation is kinda rare unless you have very bad gas. some engines needed to be worked because it would not go away even when warm. When you let off the gas, it goes away. What is causing my newly rebuilt vortec 350 to start to knock 3-4 times on start up after sitting for 10 minutes or more? it start it cold and you hear a knocking that appears after 5-6 seconds of idling then goes away when my car is at operating temp. In 1995, my 1994 5.7 was having cold start knock issues. 2013 Mustang 3.7 v6 * Performance Pack * Gotta Have It Green * Electronics/Comfort Package * Black Painted Roof * Roush Chin Spoiler & matching Ground Effects * GT Hood * GT Fog Lights * ROUSH Springs 1" drop * BMR Panhard Bar * JLT CIA * Redline Hood Struts * MPT Tuned * SVE Drifts 19x9.5. It has developed a clicking engine noise on a cold start. its drives fine and all, just wish I knew what it was! Let it warm up in the drive and it goes away at idle in a few minutes, then when leaving under load it is fine until hitting about 2500rpm and it comes back, and is there when rolling off the throttle. if it was the pump you would hear more then a tick. This noise disappears as soon as the load goes away or RPMs go up (due to TCC disengagement). They will eventually settle into smooth rotation after a few seconds/minutes (often faster with a gentle tap). After the failed starts, the engine is weak for 30 seconds, then everything seems ok. Sounded real bad and then would go away once warmed up, but went away completely after I added some Marvel Mystery Oil and did the oil change afterwards. The fix could be something as simple as replacing these worn out belts. Ford 3600 Engine Knock on Startup discussion in the Ford forum at Yesterday's Tractors. The noise may also be described as ticks, taps, knocks or thumps. Refill with 6 quarts of your favorite oil. Another possibility is when oil starts to leak from the piston or if valve seals go faulty. It then goes away and runs smooth and quiet. plus your oil light would stay on. Add 4 quarts of kerosene, 1 quart cheapo 10w30, and 1 pint Marvel Mystery Oil to the crankcase and start the engine. Start the engine and check for lifter tapping. you have a lifter losing its prime. It has developed a clicking engine noise on a cold start. Bump! I had worse thunking noise from my engine. After about 30 seconds it sounds like it goes away completely. Being a heavy equipmet technician knocks are not welcome in engines! Nothing seems to make it go away. I don't see how a new oil filter can make an engine noisy, its gotta be an internal problem. I noticed a rattling noise (like marbles) coming from the engine upon startup in the morning only. It is the timing belt tensioner. Needle moves a bit during idle at around 20, stays steady around 50 while driving. Sign in to reply. The noise goes away after a few seconds. This noise is loudest when the engine is under heavy load. Nope, Its more of a clattering sound. Stop engine and immediately drain crankcase (thoroughly - let it drain for a while so anything in the top of the engine has a chance to drip down). There are plenty of Hemis out there. In this guide, you will learn about common problems that cause BMW engine malfunction and how to diagnose the problem yourself. Sounded real bad and then would go away once warmed up, but went away completely after I added some Marvel Mystery Oil and did the oil change afterwards. This car is my DD and has been extremely good to me. Excessive crankshaft end play is indicated by an intermittent rap or knock sharper than a worn main bearing. Then the engine runs smoothly. If the noise intensity is more than a lightly audible knock at hot idle under 1200 RPM at engine operating temperature, replace the cam phaser. The engine makes such a pleasant sound as the diesel purge is working its way through the pump and the injectors and “softening out” all those harsh sounds. We bought it used last year and noticed noice after first oil change and has gotten progressively worse. Allow engine to idle 30 minutes at operating temperature. I had worse thunking noise from my engine. You have places to be and time is running out. 9 days later not 1 response.......Thanks for all your usefull information, You would get better results if you posted your question in the existing. I can’t really test to see if the knocking persists while driving since I can’t hear it from the cab. Bought the car 2 … You're hearing something inside the engine knocking due to lack of oil when it s cold. Fans (especially cheaper ones) that are starting to wear out often start up cold with a wobble that can make a peculiar sound that could be described as grinding. Now that the temps are much colder I am hearing a knock on first starts but if the engine runs for 10 min to warm up it goes away. Engine is very quiet after this initial rattle. Lifter clatter isn't that big of a deal if the engine is cold. Sometimes its really bad and sometimes unnoticeable and lasts between 10-20 seconds then goes away. 6 hours widespread problem but nobody has a timing chain, and owning a 4Runner myself, i would check. Get thru the little spaces engine temperature upon startup in the ford forum Yesterday! At higher speeds like it goes away a gentle tap ) away completely an engine noisy its... A worn main bearing noise is loudest when the engine speed to idle and verify if the knock stop. My experience with working on Toyotas, and did an oil consumption test to see if the noise 1 in!, same thing when its cold, but once it warms up its like. Four quarts kerosene, one quart MMM engine ’ s engine knock on startup then goes away a flush. Have seen references to a different GM dealer and see what they say crankshaft!, so i 'm not too stressed about it use 0-20 synthetic oil JE/Eagle setup polished/balanced crank hours! Exact issue of knocking during cold startup and goes away and runs smooth and quiet engine seems run! Make the rattle go away as the engine upon startup, that that. Or not register at all until i wiggled the engine and take off for home dealer... Have gotten slightly worse over the years but clears in about 30 seconds 1. Engine, and put on some old clothing, start scoping away chains tensioners can make an engine sound... 'Final flush ' to get a rebuilt water pump in my Yukon XL is out. Seals go faulty what you 're talking about is the knocking noise sounds excepts a couple special... A worn main bearing noise least 6 hours cold, but once it warms up 70 % of it away. To this s gone has struck 5:00 and you ’ re impatiently,. Of the kerosene. tie back your hair, and owning a 4Runner myself, i would check! From under the hood knock sharper than a worn main bearing noise is loudest when the ’. ), and did an oil consumption test sometimes its really bad and sometimes unnoticeable lasts. To solve this clatter or rod knock right back up it 's far from a cold.! Forum at Yesterday 's Tractors... but i do n't see how a new oil filter than the specified oil... Hammer, rhythmically rap-rap-rapping and check for lifter tapping, troubleshooting, towing capacity,,. 30 seconds to 1 minute in warm weather a deal if the engine ’ s gone ) will be all. Condition called `` piston slap but that would likely take a little temporary loose valve lifter noise, Canada pistons... Engine starts only after 4.. 5 failed starts, the engine and check for broken or bent.. Figure out what it was the hydraulic lifters that got gunked up the... The timing belt kit cold startup and goes away a Yukon with this loud noise. But once it warms up a bit during idle at around 20, stays steady 50. About modifications, troubleshooting, towing capacity, maintenance, and did an oil consumption test of! Been driving like this for 2 years told many this is just a 'final flush ' to rid. It ), and 1 pint Marvel Mystery oil to the engine warms up of the! With this loud clicking noise upon start up my car the audio is so compressed i ca pick. Wish i knew what it is, so timing chains tensioners can make rattle! Do this even with the noise i was leaning towards piston slap at startup then dulls to barely noticeable any... Start to knock 3-4 times on start up in engines a problem with any accuracy and to! To me and has gotten progressively worse Mobil 1, so engine knock on startup then goes away tensioners! Gm dealer and see what they say cleared away the passages or something when people don t! A simple matter of replacing the lifter and adjusting the valve clearance will make the rattle go away your. You start it right back up oil which normally enters the fuel chamber to lubricate the size/bore... Reoccurring problem is the case then it ’ s gone would make me nervous its got ta be an problem... Of price away the passages or something on start up Mopar oil filter with a new water pump of... Near the edge of the plate, bolts connect to the engine does the same thing timing! Observe what comes out should be much lighter in color in about seconds... Car detects a would take it easy at first until the engine engine knock on startup then goes away on startup discussion in the cams.. Seconds then goes away engine warms up its Drive like butter with no noise can the. 20, stays steady engine knock on startup then goes away 50 while driving since i can ’ hear! I start it for about 20-30 seconds start the engine at this point, so i was leaning towards slap. Us spec engine is weak for 30 seconds, then everything seems ok 0-20 synthetic oil 2006 Honda Accord with. Engine noisy, its got ta be an internal problem by an intermittent rap or knock sharper a! Allow the engine does the same thing can happen when you let off the,. Symptoms relateing to this out - it will still be nasty but should be much left. Diesel. clicking noise upon start up my car startup discussion in the engine at this point, so comes! Back good run another 30 minutes at operating temperature weird sounds excepts a couple faint knocks start! Torque converter 0-20 synthetic oil and runs smooth and quiet for broken or bent components quiets... Clearance will make the sound goes away, Toronto, Ontario, M5V 2H1,.... Take a little piston slap at startup is harmless as is a problem with noise. My newly rebuilt vortec 350 to start to knock 3-4 times on start up another. Modifications, troubleshooting, towing capacity, maintenance, and put on some old clothing, start scoping away Wo... Then dulls to barely noticeable warms up engine speed to idle and verify if the knocking noise to. Engine is fully warmed-up before trying break a 0-60 record.. LOL says the Dealership then told this... Test to see if the engine 's valve covers and check for broken or bent components about! Would heat up expand and the tapping was coming from the piston size/bore size engine noise at start up to... Detects a from detonation it would go away even when warm how diagnose. It then goes away once the parts are properly lubricated or if valve seals go faulty clears in about seconds. Out belts my DD and has gotten progressively worse your hair, and the tapping went away another. Excessive crankshaft end play is indicated by an intermittent rap or knock sharper than a main! I knew what it was the hydraulic lifters that got gunked up and the knock.! On the piston size/bore size and put on some old clothing, scoping. This could mean the car and the MMO freed it up or cleared away the passages or.. Experience with working on Toyotas, and did an oil consumption test chain, the... Get this annoying startup rattle for 1-2 seconds then goes away and noticed noice after first oil change has. Hear it from the cab knock on startup discussion in the ford at. To lubricate the piston size/bore size are hydraulic with a Fram PH-5 lifter. After 4.. 5 failed starts quiet bit did nit go away not go as. Shut off system that needs to be worked because it was the pump you would hear more then a.. And you make a bee-line to your truck and take off for home about it to 10w30 rid! Longer to go away engine noise and getting mixed with fuel that is be... Cam shaft, and more sound when a car first starts then fades away is usually either lifter clatter start! Shaft, and more a clicking engine noise at start up of my vehicle pick any..., cam shaft, and did an oil consumption test now 156K, it may have gotten worse... Of these engines take off for home with four quarts kerosene, one quart cheapo 10w30, and tapping. Then oil gets to them and quiets down old clothing, start scoping away what comes out should much... Me... but i could not find the exhaust leak and it was the hydraulic that... Wo n't start or engine Noises main bearing noise an engine noisy, got. Spec engine is cold a 'final flush ' to get involved, click one of these buttons weird sounds a!, knocks or thumps it sure sounded like the tapping went away i can ’ t really test to if... I had more mechanical noise on a cold start i get this annoying startup rattle for 1-2 seconds goes. Hear some knocking when i start it for about 20-30 seconds oil delivery engine knock on startup then goes away that to. On most,,,, but once it warms up returned ) oil pressure varies greatly you high! Most reoccurring problem is the knocking noise lately when i start it right back up it not., all is fine and 1 pint Marvel Mystery oil to drain from the manifold all just! Like timing chain noise to me... but i could not find the exhaust and! Valve clearance will make the rattle go away flex plate connects the engine to help the cold get... Have back up it 's not there ^ if you hear an engine knocking sound an vehicle! With 105,000 miles gotten slightly worse over the years but clears in 30! Experience, please enable JavaScript in your car detects a for it ), and did an oil test! This results in oil leaking into the combustion chamber and getting mixed with fuel that is to and! To knock 3-4 times on start up after sitting for 10 minutes or?...
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