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Home >> Mercury >> 1993 >> Villager LS >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments 3.0L >> Adjustments >> Ignition Timing

Ignition Timing

Fig 1: Locating Ignition Timing Marks
G50H01673Courtesy of FORD MOTOR CO.
  1. Ensure engine is at normal operating temperature. Run engine at 2000-3000 RPM 2 or 3 times, then allow engine to return to idle. Turn all electrical loads off. Disconnect IAC valve harness connector. Check the idle speed, it should be 750 +/- 50 RPM. Connect a timing light to the engine. Make sure the timing pointer is pointing to the 15°BTDC mark on the crankshaft pulley. See Fig 1 .
  2. Check ignition timing, it should be 15° +/- 2° BTDC. See Fig 1 . If ignition timing is incorrect, loosen distributor bolt and turn distributor to adjust ignition timing.
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