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1991 GMC Jimmy Won't start

Tiny
DEVON, 91 JIMMY
  • MEMBER
  • 1991 GMC JIMMY
  • V8
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
Just after I got gas I was driving and my truck turned off. I pulled over and tried to turn it back on. It would not fire. Tried several times and no luck. I got pulled home and was told that it might be the fuel pump if so where is it and how do I fix it? If not what else could it be?
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Saturday, October 3rd, 2009 AT 7:59 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome, have a helper crank it, while you check for spark at the plugs. If you have spark everywhere, use a gage and check fuel pressure. If your TBI watch for an injector spray pattern. A spray pattern doesn't mean the pressure is ok. The pump is in the tank. With TBI system, pressure is around 10 psi.
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Sunday, October 4th, 2009 AT 9:43 AM

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