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Home >> Lincoln >> 1986 >> Mark VII Base >> Repair and Diagnosis >> Engine Performance >> System >> 5.0L SEFI EEC IV Testing >> Quick Test >> 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 SYMPTOM1  TEST.
  1. Turn ignition key off, and then 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 MM - SPARK TIMING CHECK  . If timing is 27-33° BTDC, go to ENGINE RUNNING SELF-TEST.
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