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I have changed fuel pump, fuel filter.

Tiny
ANONYMOUS
  • MEMBER
  • 1995 GMC SONOMA
  • 265,000 MILES
I have changed fuel pump, fuel filter, distibuter cap, rotor, plugs and wires and my truck still wants to backfire and looses power ! What else should I try?
Tuesday, April 9th, 2013 AT 11:22 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Start with compression test

Roy
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Tuesday, April 9th, 2013 AT 11:28 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
What engine is this?
Is it setting any codes?
Did you by chance try to change the timing?(4.3)
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Tuesday, April 9th, 2013 AT 11:36 PM

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