Ignition Rotor: Testing and Inspection

Distributor Rotor:

1. Remove the screws securing the distributor cap to the distributor.
2. Confirm that the rotor does not turn on the distributor shaft.
3. Remove the rotor.
4. Visually check the rotor for signs of "Burn Through" from the electrode to the distributor shaft.
5. Check the input (center) contact for excessive carbon build-up and corrosion.
6. Check the output (outer) contact for excessive carbon build-up and corrosion.
7. Using an ohm meter, check for continuity between the input (center) electrode and the output (outer) electrode.
Replace the rotor if it fails the above tests.