Mechanics

WHAT WOULD CAUSE A ENGINE KNOCK?

1988 Chevrolet Celebrity • 140,000 miles

We had a strong gas smell. We changed the fuel pressure regulator and now its knocking.
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Redrosie57
April 22, 2012.



Where is the noise coming from?
Is engine running smoothly?

KHLow2008
Apr 22, 2012.
We had to put on a new fuel presssure regulator. After they got it back together, cranked it up and started knocking. Then there was smoke coming from the back where the regulator is. Our so-in-law said it might be a something like an exhaust leak there. It was midnight so he really couldn't tell.

Tiny
Redrosie57
Apr 22, 2012.