Senior Tech Team
Join Date: Nov 1999
Location: Whittier, California
The little4 capacitor Coppertop refers to is a noise suppressor, a capacitor, just as he says, there only for AM and CB radio useage, not needed for ignition system stability or other uses, just to dampen AM radio noise from the system. they indeed, can partial short, and cause problems.
I do, however, think you either have some sort of special coil eith the wrong primary windings or one that has internal insulation layer shorts. A layer short will cause the coil temp to go skyward, almost to smokin'.
All coils that run on resisted systems are external resistor type. Some performance aftermarket coils, like certain Mallory and Accel Super-Coil come with, and need, a second ballast resistor, to work with weak primary winding.