I have a 1990 Chevy Silverado 3/4 ton pick-up. It has no spark at the plugs. It turns over fine. I replaced the igniton coil and had the ignition module tested at Autozone. The cap, rotor and wires are fairly new.
Fairly new won't quite do it. HEI ignition? They have a very hot spark and that hot spark burnsthe rotor in its center under the tang through to groung,advance weights. Change rotor and place some silicone on center of cap and the underside center. - Good luck. -Ned
Note, HEI ignition, coil is on top of distributor under a plastic cap.
Check for cracked relucter ring in distributor inheirant problem for those vehicles so that is where i would start
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