backfire through throttle body buick skylark 2.5

1989 BUICK SKYLARK
259,000 MILES
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CHEVELLESS68
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  • 1 POST
when its cool it runs fine after warming up to much throttle and it starts backfiring floor it and it pops a few times and comes out of it
Mar 14, 2012 at 8:46 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Is the check engine light coming on and last major tune-up??

Check the fuel pressure if its within specs-start here
Mar 14, 2012 at 9:03 PM
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FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
maybe ECT, EGR, MAP/MAF issue.
Mar 14, 2012 at 9:06 PM
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