Question about 1998 GMC Jimmy
The fuel pump or the sparkplugs or both,check it out.
Could be in need of a tune up... carb and timming adjustment. New plugs,wires,rotor, dist cap.Tune ups are needed on a regular basis ussualy once a year depending on the amount of miles you put on the car? The charging system sounds o.k but tune up may be in order
Timing is way off specs, or plug wires hooked up incorrectly. I would suspect the latter.
Firing order 1-3-7-2-6-5-4-8
if vacuum leak
Posted on Nov 19, 2008
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