I have a 1991 Gmc sonoma 4.3


Asked by Feb 25, 2016 at 06:29 PM about the 1991 GMC Sonoma 2 Dr SLE Standard Cab SB

Question type: Maintenance & Repair

Number 2 and 6 cylinders are not firing can I
fix the motor or should I get a new one

3 Answers


How nany miles on the old one? If allot and the body is good then it makes sense...

1 out of 1 people think this is helpful.

Its like why are they not firing? Have you done a compression test? If so and the cylinders are low in compression then yes, then get a re-manufactured engine.


Did you trace the two plug wires back to the coils.If both go to one coil then likely a faulty coil. Should be 3 coils together and 2 plug wires to each coil.

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