1991 GMC Jimmy Won't start

1991 GMC JIMMY
250,000 MILES • V8 • 4WD • AUTOMATIC
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DEVON, 91 JIMMY
  • MEMBER
  • 1 POST
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?
Oct 3, 2009 at 12:59 PM
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JDL
  • ✓Experienced 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.
Oct 4, 2009 at 2:43 AM
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