backfire through throttle body

1989 BUICK SKYLARK
259,000 MILES
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CHEVELLESS68
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  • 1 POST
check engine light doesnt come on.Replaced the crankshaft sensor a week ago tune up a couple months ago. Car only gets drivin about 50 miles a day
Mar 15, 2012 at 9:32 AM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
That means the fuel is igniting at the wrong time. Check all ignition related components.
Mar 15, 2012 at 9:56 AM
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