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Engine noise, ticking sound?

Tiny
MIKELINE
  • MEMBER
  • 1998 PONTIAC FIREBIRD
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 187,000 MILES
Car idles and runs great, but there is a constant ticking sound that I isolated using a stethoscope. I can't understand it, but the sound is coming through the bracket that holds the EGR valve.
Thursday, January 12th, 2023 AT 3:46 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,959 POSTS
This could be an exhaust valve or lifter problem; I would do a compression test to see what you find. If one cylinder is low, you have found the problem and the cylinder head may need to be removed or a new lifter if the push rod is loose in that cylinder. Can you please shoot a quick video with your phone so I can hear the noise? That way I can tell for sure what's going on. You can upload it here with your response.

Here are two guides that will help us:

https://www.2carpros.com/articles/how-to-test-engine-compression

and

https://www.2carpros.com/articles/engine-noises

Please let us know what happens.
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Friday, January 13th, 2023 AT 10:54 AM

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