Distributor Specifications

Distributors on 4-cylinder models are equipped with mechanical and vacuum advance. To check mechanical advance operation, turn distributor rotor counterclockwise and release. Observe that rotor returns quickly and smoothly. Repair or replace as required.

To test vacuum advancer, attach vacuum pump to distributor vacuum sub-chamber (nearest distributor body) and apply at least 7.87 in. Hg. Gradually apply vacuum to main vacuum chamber (away from distributor body). Observe that actuator arm operates properly. Repair or replace as required.