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2002 Chevy Impala 3800. Knock

Tiny
SCHULTZDW
  • MEMBER
  • 2002 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 125,000 MILES
I have 3800 engine and all of sudden when I started it I have tapping or knocking noise coming from the top of the engine and does not go way or quiet down. I ran it for 2 miles after that and now it sits.

What are the possibiltes?

I was told that it has hydraulic lifters and usually they would make less noise as the engine gets warm.
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Friday, February 6th, 2009 AT 11:28 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Hi:
If the noise is at the top of the engine, chances are it is a lifter or a rocker arm. To check, you will need to remove the valve cover on the side the noise is coming from. It could be a few things.

Joe
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Friday, February 6th, 2009 AT 5:57 PM

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