MSD Blaster 2 Coil Arcing

67Dart273 said
Could be a broken plug or open coil wire, damaged rotor etc in other words something in the high voltage end allowing voltage to go sky high

Could be a cracked coil tower insulator

I have seen plug wires or coil wires either one burn the center core out and do this.
Same thing Del mentioned as an "open" wire, just different words.:D