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Perhaps timing chain has jumped,
Worn cam lobes,
Firing order mixed up,
Accelerator pump failure (carburetor),
Faulty distributor cap,
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∙ 11y ago
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If you have 1993 grand prix when idling backfires through carbrator?
Its fuel injected doesnt have a carb.
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I had one do that and it was caused by a bad intake valve.
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My carb backfires its a quadrajet in a 1970 gto?
timing problem or crossed plug wire or even possibly a burnt valve.
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car has jumped it/s timing.retart timing approx 5 degrees,it should start.
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How much horsepower does a 327 small block Chevy engine have?
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