1989 Gmc C2500 Causes Backfire Through Intake Exhaust

1989 GMC C2500
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ANONYMOUS
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What causes it to backfire through the intake and exhaust
Oct 21, 2012 at 6:04 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
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spark at the wrong time.

could be cap or rotor. back in the days, it could also be a failed camshaft.

have it checked to confirm

Roy
Oct 21, 2012 at 6:06 PM
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IRONANIMAL82
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I have a 1993 Chevy s10 2.5 le iter. My mufler exploded. It runs rich. It. Back. I?n in 4th and 5th.gear loosesi loose significant power on small inclines. My pre ignition check engine. Works)s but doesn't warn!!! me of any problems
Nov 10, 2012 at 12:47 PM
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