Ignition Rotor: Testing and Inspection

1. Remove the distributor cap from the distributor.
2. Confirm that the rotor does not turn on the distributor shaft.
3. Remove the rotor from the distributor shaft.
4. Visually check the rotor for signs of "burn through" from one circuit to the other.
5. Check the center contact for excessive carbon build-up and corrosion.
6. Check the outer contact for excessive carbon build-up and corrosion.
7. Using an ohmmeter, check for continuity between the center and outer contacts.
8. Replace the rotor if it fails the above tests.