Computed Timing Check

Connect timing light, and check ignition timing. See IGNITION TIMING in ADJUSTMENTS article in the ENGINE PERFORMANCE section. Perform the following procedure as applicable:

• If ignition timing is not correct, go to CIRCUIT TEST PC (4.0L).
• If engine starts and then stalls, go to CIRCUIT TEST S.
• If engine will not start, go to CIRCUIT TEST AC (4.0L).