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Backfire through throttle body Buick Skylark 2.5

Tiny
CHEVELLESS68
  • MEMBER
  • 1989 BUICK SKYLARK
  • 259,000 MILES
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
Wednesday, March 14th, 2012 AT 8:46 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Is the check engine light coming on and last major tune-up?

Check the fuel pressure if its within specs-start here
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Wednesday, March 14th, 2012 AT 9:03 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Maybe ECT, EGR, MAP/MAF issue.
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Wednesday, March 14th, 2012 AT 9:06 PM

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