[da Vinci Dan]

Originally Posted by Trackrash

I doubt four year old wires are bad but who knows.

Here is how you check. Wait until it is DARK. Start the motor, no lights. Make sure your eyes are adjusted to the dark. Look at your motor. If the wires look like neon lights, your wires are toast. You may also see some arcing if the cap or coil is causing a problem.

FWIW, I had a similar issue, it was the rotor. Check closely for carbon tracks on the rotor.

Just replaced cap and rotor last month.