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1990 GMC Safari motor running rough

Tiny
DALLASIGOOD
  • MEMBER
  • 1990 GMC SAFARI
  • 180,000 MILES
When starting van motor runs rough. Sometimes it runs better but most of the time it will run rough.
feels like not getting enough fuel to the motor. I have a tune up, air filter, fuel filter, blown out fuel lines, new battery, what else is their to look at. The fuel pump sounds like it kicking on.
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Sunday, September 29th, 2013 AT 6:09 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check fule pressure with a gauge if tbi should be 9-11 psi. Check base of tbi with choke cleaner for vacuum leak as they blow out gaskets. And cause a vacuum leak.
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Sunday, September 29th, 2013 AT 6:29 AM

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