[Tom Kirkham]

Proper distributer phasing is when the coil is firing when the rotor is lined up with the terminal on the cap. If the box is out of phase the coil will fire between the terminals. This will play havoc with the cap and rotor... On cars that have been phased properly I have not seen a problem. On cars that are phased backwards less than 1,000 miles for a new cap and rotor is not uncommon.