1994 Chevy Camaro knocking noise

1994 CHEVROLET CAMARO
212,000 MILES • 6 CYL • 2WD • MANUAL
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BONNIE123
  • MEMBER
  • 1 POST
i have a 1994 chevy camaro, engine starts knocking after car warms up, check engine light comes on sometimes, i changed the oil and knocking became a little quieter but didn't stop; it's pretty noticeable but doesn't seem to get louder with acceleration. what could be the problem?
Jan 4, 2009 at 8:25 AM
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CHALLENGERBOY
  • MEMBER
  • 13 POSTS
Loose main bolt or a lifter.
Jan 12, 2009 at 8:09 AM
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BILLYMAC
  • ✓Experienced Mechanic
  • 2,204 POSTS
line the mains up as we say around the shop. rev the eng to about 1500 just hold it there listen if it is bottom crank. noise will be steady sounds like a bunch of marbles in a can. put vehicle in drive see if noise changes if yes wrist pin or crscked piston.if nothing changes noise and is steady most likely lifter..good luck billymac
Jan 13, 2009 at 11:24 AM
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