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Constant backfire on deceleration 88 chevy 4.3 V 6

Constant backfire on deceleration 88 chevy pickup 4.3 V6. Runs rough under acceleration. Checked timing, has new timing chain, etc ! Any other thoughts to check?

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  • Anonymous Mar 22, 2014

    backfire

  • Anonymous Mar 23, 2014

    I have a 1994 chevy pickup w/ a 350 engine.When it gets warmed up it sometime hesitates and then backfires. It has already blown up a muffler. Could it be the distributer cap?

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Check for exhaust leaks. Esp Leaks toward the front of the car. Hold your hand over the tail pipe using a rag and see where the loud hissing noise comes from. Repair the leaks and I bet the backfiring goes away

Good Luck

Posted on Feb 09, 2009

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