ENGINE NOISE

1999 Chevrolet Astro

Tiny

joey737396

December, 25, 2010 AT 8:34 PM

What causes the valves to knock

FOUND 1819 RELATED QUESTIONS

1 Answer

Tiny

Jacobandnickolas

March, 13, 2011 AT 3:28 AM

If you have a bad valve ping, it can be caused by cheap low octane fuel, a bad knock sensor, or a timing issue.

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