Let me ask the question a different way, what leads to low voltage at the plugs?

[243]

Items I'm sure of:

</font> Bad distributor cap</font> Bad rotor</font> Bad or low quality spark plug wires
</font>Possibilities in my mind:
</font> Low voltage to the coil</font> Low voltage out of the coil</font> Alternator not charging at idle
</font>Am I close, way off base or what?
I want to try what I can before I go to a shop with an engine scope...I feel better when I try to find the problem.

[Careful34]

Just a plain bad coil too I suppose. By low voltage to and from the coil you mean bad connections right?

[Stuka]

Yes low voltage too coil, coil being bad itself (to much reistance inside coils off the coil), timing being off or bad plug/coil wire.

[Rogue]

right on the money - an overly rich mixture also low Kv, all the O-Scope can really do is to verify anyways you'll still need to find out why so...got an ohmmeter?

[243]

No, I don't have an ohmmeter but I plan to buy one this weekend.

[Rogue]

happy hunting and good luck