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Backfiring and sputtering?

Tiny
CHEVY5.7
  • MEMBER
  • 1995 CHEVROLET CAPRICE
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 134,093 MILES
My car listed above is making a popping sound when I accelerate, and it is sputtering and barely goes but when it's in park or neutral it techs up just fine and don't pop but as soon as I put it in any gear that's when it starts doing it. Thanks for the help. GUUS
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Friday, June 2nd, 2023 AT 11:52 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
I have seen a broken valve spring cause this problem, but to be sure can you upload a short video of the engine having the problem then I can tell for sure.

This guide can help as well:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

and

https://www.2carpros.com/articles/symptoms-of-engine-misfires-a-step-by-step-guide

Please go over these guides and get back to us.
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Saturday, June 3rd, 2023 AT 9:34 AM

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