backfiring through exhaust

1996 CHEVROLET S-10
95,000 MILES
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STUPID CARS
  • MEMBER
  • 3 POSTS
have changed timing chain, plugs, wires, cap and rotor, set timing, have taking battery cable off to drain computer. no help at all and the mass air flow was replaced
Sep 25, 2011 at 1:30 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Either the timing is off or you have a burnt exhaust valve. Check engine compression to see if there is a weak cylinder.
Sep 25, 2011 at 1:34 PM
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STUPID CARS
  • MEMBER
  • 3 POSTS
thanks, timing is good. this didnt start until after we changed plugs, it was running fine just time to change them.
Sep 25, 2011 at 2:07 PM
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STUPID CARS
  • MEMBER
  • 3 POSTS
timing is good, the backfiring didnt start until after the plugs were replaced
Sep 25, 2011 at 2:37 PM
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CADIEMAN
  • ✓Experienced Mechanic
  • 3,544 POSTS
you need to check the firing order of the plug wires to the cap.
Sep 25, 2011 at 4:12 PM
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