LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 1986 >> Bronco 5.0 N, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 5.0L EFI EEC IV Testing >> Quick Tests >> Timing Check

Timing Check

NOTE: If engine will not start, go to TEST A - NO START  . If engine starts but stalls while testing, go to DIAGNOSIS BY SYMPTOM  TEST.
  1. Turn ignition off and wait 10 seconds. Verify that SELF TEST has been activated. Restart engine and check timing while in SELF-TEST mode. You are allowed 2 minutes to check timing from the time the last code is displayed.
  2. Correct SELF-TEST timing equals base ignition timing (10° BTDC on all engines) plus 17-23° BTDC. If timing is not 27-33° BTDC, go to TEST GG - SPARK TIMING CHECK  . If timing is 27-33° BTDC, go to KEY ON/ENGINE RUNNING SELF-TEST  .
scientia non olet · About LEMON Manuals