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Knock sound under valve cover

Knock sound in valve cover

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Having a "clicking" sound coming from engine, or dull "thumping"


could be anything from belt noise to lifter tick to rod knock..lifter tick is under the valve covers..rod knock sounds like hitting the block with a hammer..if its rod knock see what your oil pressure is.. should be around 30 to 45 psi cold..warm will be as low as 15..depending on oil type..most lifters can be adjusted by removing the cover and doing adjusting depending on the vehicle..good luck

Dec 08, 2013 | 1998 Pontiac Bonneville

1 Answer

My jetta has a ticking sound that gets loader when it warms up.


you cuold have broken valve spring or bad lifter

Sep 06, 2012 | 1995 Volkswagen Jetta

1 Answer

2006 FORD FUSION 2.3l i get a rapping sound in my engine it starting when i accelerated from a light and got worse with driving sounds like something is rattling around under the valve cover


Does it sound like Metal on metal noise? or like a knocking noise?

If it increases with RPM that means you may have a serious issue.

If your comfortable i'd take off one coil pack at a time and see if the knocking stops. If it stops that cylinder might have Rod Knock..

it could be valve lash, or a valve train tick as well. There are several different things sadly.

Feb 26, 2011 | 2006 Ford Fusion

2 Answers

I have a 2003 Chevy Impala. I ran my car with no oil and now I'm hearing a loud ticking/knocking noise coming from under my valve cover. I added 2 bottles of oil after finding out that I didnt have any...


might be the valves have been damaged running without oil
- or the crankshaft / camshaft / main bearings
most probably you have to let the engine be rebuilt by a mechanic
(expect cost of more than US$ 2.000)
or get another (used) engine at a scrapyard 2003-chevy-wutfveiel3ypko01ydor435x-5-0.jpg 2003-chevy-wutfveiel3ypko01ydor435x-5-2.jpg

Sep 14, 2010 | 2003 Chevrolet Impala

1 Answer

I have knocking under my vavle cover what could be the problem


If it is a heavy knock it sounds mechanical and I'd have it checked before something bad goes. If it is that of a clicking sound I expect it is a sticking, failed or failing valve lifter. Given the year of your car this may be under warranty in your power train warranty,
I hope this may have helped,
Tom

Sep 23, 2009 | 2006 Hyundai Accent

1 Answer

Knocking or ticking in the engine, under the valve cover ticking under valve cover in 94 cavalier i think it is the rocker arms


you are right its either a rocker arm broken or loose or it also could be a broken valve spring so look for all three While you have the valve cover off to save you coming back and looking again ... thanks Jerry

Apr 22, 2009 | 1994 Chevrolet Cavalier

2 Answers

Loud knocking or tapping sound when engine is cold


THIS NOISE IS PISTON SLAP..MOST NEONS HAVE THIS NOISE..HAVE SEEN THEM LAST FOR A LONG TIME..AS LONG AS IT GOES AWAY,IT SHOULD BE FINE

Mar 08, 2009 | 1998 Dodge Neon

1 Answer

Engine noise


If its sounds like its under the valve cover then it would be a valve lash adjuster on the rocker.

Feb 03, 2009 | 1998 Toyota Camry

1 Answer

Avalon knocking


Hi, airjeff8

In a nutshell, you need to get the valve cover off and see whats going on under there. It could be a broken camshaft or a valve/spring issue amongst other things.

Whip the cover off and have a look.

Regards

Geordie

Jun 17, 2008 | 1997 Toyota Avalon

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