1999 GMC Jimmy Repair Question
Asked on June 27, 2012
1999 GMC Jimmy w/ 4.3. engine will not fire after sitting for 10 days, have spark and fuel pressure
Hi, I have a 1999 GMC Jimmy w/ 4.3. I just got back from a 10 day vacation and I cannot get the engine to fire. I have used a fuel pressure gauge at the fuel rail and have confirmed 62psi when I turn the engine over. I have also verified that there is spark coming from the coil wire. I have also confirmed that there is spark at the plugs by pulling off the #1 plug wire. The engine will just turn over with out any attempt to fire. I have also tried pouring fuel into the throttle body and spraying starting fluid as well. Does anybody have any suggestions?
Asked by h2ostudAnswer
Replied on June 27, 2012
62 looks good. i would re verify spark. does not make sense that it wont fire up. spraying with no response indicates a spark issue.
Roy
Replied on June 27, 2012
I have verified that twice already. If I do have spark and proper fuel pressure it mean that the timing of the spark firing could be off. Would a bad cam sensor, crank sensor, or ignition control module cause that?