Ignition Timing: Adjustments

1. Apply parking brake and make sure vehicle is in PARK (A/T) or NEUTRAL (M/T).
2. Warm engine to operating temperature.
3. Turn OFF all electrical loads and accessories.
4. Connect timing light.

Timing Adjustment Procedure:

5. Disconnect and plug vacuum hoses from distributor vacuum control diaphragm.

Self Test Input Connector:

6. Using a jumper wire, ground 1-pin STI connector.
7. Check idle speed and adjust if needed.

Timing Mark Reference:

8. Verify ignition timing is 12° ± 1° BTDC.
9. If marks are not aligned, loosen mounting bolts and turn distributor until timing is set.
10. Tighten mounting bolts.
11. Reconnect vacuum hoses.
12. Remove jumper wire from STI connector.
13. Remove timing light.