2002 Chevy Impala 3800..knock

2002 CHEVROLET IMPALA
125,000 MILES • 6 CYL • FWD • AUTOMATIC
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SCHULTZDW
  • MEMBER
  • 1 POST
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....
Feb 6, 2009 at 3:28 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 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
Feb 6, 2009 at 9:57 AM
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