Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Okay guys I need someone that has play mechanic on the older ones to tell me what the little capacitor thing is on the side of the coil. Looks like the capacitor in the old distributors but it’s just bolted to the side of the coil with a big plug on it.
It allows the high voltage AC voltage spikes that occur in the primary after the end the spark when the coil is "ringing" a path to ground.
It is a simple capacitor - capacitors allow an AC voltage to pass but block DC by damping the ringing it suppresses radio interference
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
