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Valves lifters 2008 RAV4 V6 44,000 miles: noisy valve lifters(?) when engine cold. Quiet when engine warm. Future problem?

Posted by Anonymous on

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Dodge Caravan 2000, 3 l engine, 109000 km/ mechanical valve lifters that are out of adjustment

The next time you do an oil change, put a liter of tranny fluid in with the oil BEFORE you change it. Let it run for an hour or two.The tranny fluid will clean out the gunk that causes your lifters to stick.Now do your oil change. Do this each time you change your oil, only use a 1/2 liter each time. You will be amazed at the difference, I was.

Posted on Dec 08, 2008

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SOURCE: Lifters or valves tapping

it sounds like maybe a worn lifter they are easy to replace

Posted on Mar 02, 2009

Mr BrokRench
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SOURCE: noisy startup when cold, sounds like valve

Hello onarock844...The Hyundai 2.4 litre and the 3.3 litre are known to have valve train noise. Some sooner than others.
The timing chain tensioners on the 06 and 07 Sonata 3.3 engines built before August 4, 2006 are well known for developing wear that allows them to make a tapping or rattling noise for a short time after a cold start. This noise can be mistaken for a lifter noise, although the actual source is in the front cover area of the engine. Hyundai has released a technical service bulletin on this problem, which describes installation of an updated design timing chain tensioner (part #24410-3C300) to correct this noise issue.
Ask your dealer to refer to Hyundai service bulletin #06-20-002 for information...If this has already been corrected,,,and the noise is coming from the upper engine area and not from the timing chain area, then the valve clearance will need to be adjusted. This is done by disassembling the valve train and installing slightly different size tappets to change clearance.
This is a fairly labor intensive process, so if you are still under factory warranty then you will want to go over the dealer's head and get the Hyundai zone rep involved to get it covered before your warranty coverage expires...
I recommend useing a full synthetic engine oil, i know in a few cases where the noise has stopped when the oil was changed over to synthenic, also a high quality filter is important, such as a purolator.
Good luck...i hope this helps...please rate me a fixya.

Posted on Jul 29, 2009

  • 62 Answers

SOURCE: I have some noisy hydrulic lifters that just

What you want to do is find a shop that sells BG products. Ask them for part number 210 (engine flush) & part number 110 (MOA ((motor oil additive)) ) . First install the oil flush and moa into your oil filler and run motor for 30 min AT IDLE. Now drain the oil from the crank case and install new filter and castrol 5w30 non synthetic oil. Then run the motor for 15 minutes AT IDLE. Now drain that oil and install new filter. Now goto part store and get MOBIL 1 0w30 and preferably a factory GM oil filter. Install the oil and filter and put one more can of MOA into crankcase. We do this service at our shop ($250). You can do it for about $70. We suggest always using mobile 1 , it is a far superior product. The 0w40 takes no time to get to the lifter upon start up since its so light. once you reach operating temp the viscosity is factory...good luck

Posted on Jan 06, 2010

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SOURCE: my car is a 1994 galant 4G63 and last week i

I am not an expert on the these engines but the 94 galant (in the USA) had a 4g64 engine (2.4 inline 4 cyl fuel injected). On the 4g64 engine the valves are hydrolic meaning there is no manual adjustment. YOur mechanic made a mistake in that the valve lash adjusters should have been reinstalled back in their original position. Being that was not done there is not much you can do other than replace them with new ones. By the way the valve lash adjusters should be partialy filled with oil so there is little or no plunger action when the adjuster is depressed. Your mechanic should have placed them in a can of clean engine oil and depressed the plunger on the valve lash adjusters to cause them to fill with oil. If you can still depress the adjusted after it is filled with oil then it is defective. By the way, this is not an unusual problem as many high mileage Galants make a fair bit of valve noise. You can get more details from a Haynes manual (about $20 at autozone)

Posted on Feb 21, 2010

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What will be the problem if i have a taping noise when i start my car until it gets warm mitsubishi 380


A tapping noise that starts out cold and goes away when warm is usually caused by a valve lifter inside the engine. The lifter may be worn/leaking down and will be noisy until it fills with oil pressure. You can try an oil additive ( Lucas Oil Additive ) available at most part stores works very well with noisy lifters. Another noise that can happen cold and go away when warm is an exhaust manifold leak. However, this is normally a ticking type sound rather than a tapping sound.

Jan 19, 2016 | Mitsubishi Cars & Trucks

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My 2008 Corvette has ticking noise when it is on a cold start,but is quiet after warming up.


COULD BE A HOT SPOT WHEN YOU SHUT IT OFF THE OIL BURNS OFF AND THE COLD START IS THE DRY LIFTER AND ROCKER CONTACT OR THAT SPRING IS WEAK UNTIL IT HEATS UP AND EXPANDS TO CLOSE THE GAP BETWEEN THE ROCKER AND THE VALVE STEM

Feb 20, 2015 | 2008 Chevrolet Corvette

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Mitsubishi l200 2.5 did 08 very noisy engine, sounds very tappety is this normal ?


It may be worn out valve lifters that are inside the engine. If you have more than 6,000 miles on the oil, valve lifters could run noisier. Changing to a high mileage type of motor oil may quite down the valve lifters noise somewhat. Synthetic oil used during the summer months could make it noisier too. If you can hear the noise while driving the car, it is not normal. Upon acceleration, if it gets noisier, you will be needing a valve job in the not to distant future.

May 29, 2014 | 2007 Mitsubishi L-200 2.5

1 Answer

2001 Buick Lesabre lifters noisy


Have you tried flushing the engine crank case? You may have sludge clogging the valve lifter oil pressure ports. Get a can of Berrymans brand Chemtool, add it to a cold engine crankcase oil and run it for 5 miles or so, then change the oil and see if the noise level improves. Some tapping noise on cold start is normal and not a sign of any problem. If the noise goes away in my opinion I'd just do the flush of the system and then leave it alone.

Mar 13, 2012 | Buick LeSabre Cars & Trucks

3 Answers

What can cause a knocking at the right hand side valve cover


Hi , usually a knocking / pinging from the valve cover indicates a lifter tapping. Could be worn out or just worn. Do you change your oil every 3000 with high quality oil? (I always have used valvoline standard with outstanding results) Dirty oil and filter and or incorect weight oil and or using synthetic oil in older cars can result in lifters tapping. If your oil is under 2000 miles since last change and you used a high quality oil (watch who changes your oil, some places use inferior oil because its cheaper) you can buy a pint of oil treatment formula to quiet noisy lifters to coat the lifter and quiet it down. It is a sign of engine wear, but one lifter tapping a bit wont really hurt your engine mechanically. If they all get noisy, time for a valve job. Root cause is wear due to insufficient lubrication. The lifters on newer cars are all hydraulic and they self adjust. No manual adjustment is possible. Bottom line: keep your oil changed regularly using a high quality non-synthetic oil for your 1999 vehicle.
Please rate this answer! Thanks, Mike

Jun 14, 2011 | 1999 Ford Expedition

1 Answer

When I first start the 2008 Toyota Sienna the valves sound real loud for the first 2 or 3 miles.....even sounds like a diesel engine as it starts the pull. I took it to the dealer and they said the noise...


something is restricting the flow to the valve lifters. I like Marvel Mystery Oil brand
to clean oil passage and quiet noisy lifters. may take a week of driving to notice the difference. If that doesnt help I would find another dealer that will take a little better look at the problem

Feb 16, 2011 | 2008 Toyota Sienna

1 Answer

What causes the lifters to click for a few minutes then they my not click for 3 or 4 days


Your lifters are the hydraulic type. Inside the lifter is a small piston that is driven by engine oil pressure. As the lifter gets older, a small amount of residue forms inside that is more sticky when cold than it is when warm. That prevents the piston to move freely until it gets warm. The piston takes up slack between the cam and valves, so when it's stuck, the valves become noisy.
Usually if the problem is minor, adding marvel oil to your engine oil will gradually dissolve the deposit and quiet it down. Internal lifter wear can also cause a similar problem. Adding a viscosity improver such as lucas additive will often help with that.
Your only other option would be to take the engine apart and actually replace the lifters.
When using additives, give them time to work....deposits form over time and it takes time to make them go away.

Feb 09, 2011 | 1993 Nissan Pickup

1 Answer

I have a 2004 Toyota Tacoma. During the last 2 months when I start the truck in the morning I hear a "tac, tac, tac, tac ...." noise for 30s to 1 min than it stops when I drive away. This...


This is most likely a noisy lifter (or valve tappet). In cold weather, the clearances in the valve train open up because metal contracts due to the cold. Once the oil pressure comes up after start the noise goes away because the larger clearance fills with oil and the lifter becomes "cushioned" with the oil. The proper fix is to have the valves adjusted. I believe in your model, that is done by putting shims on the lifters. This will quiet the noisy lifters. In the short term, you can try using a lighter weight oil for cold weather. This will get the oil to the lifters faster after start up and quiet the tapping more quickly. Once the weather warms again, shift back to the normal weight.

Jan 09, 2011 | 2004 Toyota Tacoma

3 Answers

I just bought a 2008 Sienna w/ 44,000 miles. When the engine is cold, doesn't have to be really cold, I hear this ticking noise (not loud) when engine is under slight acceleration between 1500- 2000 rpm....


Sounds like you are describing lifter noise. Go to the car store and buy a pint of Berrymen's Chemtool. Next time the engine is cold, pour the Chemtool into the engine oil. Do your normal driving for the next few days or weeks until you have 150-200 miles (none of them should be highway miles) on the engine, then have the oil changed. Drive for 2000-3000 miles, and do the same thing all over again. Repeat this a couple of times. If the lifter loosens up, your good to go. If it doesn't, then it will have to be repaired by tearing into the engine.

Dec 16, 2009 | 2008 Toyota Sienna

4 Answers

TAPPING IN VALVES


ENGINE CLICKING NOISES
A clicking or tapping noise that gets louder when you rev the engine is probably "tappet" or upper valvetrain noise caused by one of several things: low oil pressure, excessive valve lash, or worn or damaged parts.
First, check the engine dipstick to see if the oil level is low. If low, add oil to bring it back up to the full mark. Is the engine still noisy? Check your oil pressure. A low gauge reading (or oil warning light) would indicate a serious internal engine problem that is preventing normal oil pressure from reaching the upper valvetrain components. The cause might be a worn or damaged oil pump, a clogged oil pump pickup screen or a plugged up oil filter. Using too thick a viscosity of motor oil during cold weather can also slow down the flow of oil to the upper valvetrain, causing noise and wear.
COLLAPSED LIFTER NOISE
Worn, leaky or dirty lifters can also cause valvetrain noise. If oil delivery is restricted to the lifters (plugged oil galley or low oil pressure), the lifters won't "pump up" to take up the normal slack in the valvetrain. A "collapsed" lifter will then allow excessive valve lash and noise.
VALVE LASH NOISE
If you can rule out lubrication-related problems as a cause, the next step would be to remove the valve cover(s) and check valve lash. On older import engines, mechanical lifters require periodic valve lash adjustments (typically every 30,000 miles). Too much space between the tips of the rocker arms and valve stems can make the valvetrain noisy -- and possibly cause accelerated wear of both parts.
To measure (and adjust) valve lash, you need a feeler gauge. The gauge is slid between the tip of the valve stem and rocker arm (or the cam follower or the cam itself on overhead cam engines) when the piston is at top dead center (valve fully closed). Refer to a manual for the specified lash and adjustment procedure. Also, note whether the lash spec is for a hot or cold engine (this makes a big difference!).
On engines with hydraulic lifters, oil pressure pumps up the lifters when the engine is running to maintain zero lash in the valvetrain. This results in quiet operation. So if the rocker arms are clattering, it tells you something is amiss (bad lifter or worn or damaged parts) or the rocker arms need adjusting.

Let me know if you have any other questions.  Thanks for rating my response and for using FixYa!

May 28, 2009 | 1997 Ford Expedition

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