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Home >> Chrysler >> 1993 >> Imperial >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Ignition Timing >> 4-Cylinder Ignition Timing >> 2.2L & 2.5L
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2.2L & 2.5L

  1. Place gear selector in Neutral or Park position. Turn off all lights and accessories. Connect inductive pick-up timing light to cylinder No. 1.
  2. Start and warm engine to normal operating temperature. Disconnect engine coolant sensor lead wire. Radiator fan should come on, and CHECK ENGINE light on instrument panel should illuminate.
  3. Check timing through timing window in bellhousing. If timing is within 2 degrees of specification, DO NOT adjust ignition timing. See 4-CYLINDER IGNITION TIMING table. If timing is not as specified, loosen distributor hold-down bolt, and turn distributor housing until specified timing is obtained.
  4. Recheck timing after distributor hold-down bolt has been tightened. Reconnect coolant lead wire. Erase fault codes. Remove diagnostic equipment.
4-CYLINDER IGNITION TIMING

Application Degrees BTDC @ RPM
2.2L TBI 10-14 @ Idle
2.2L Turbo (1)
2.5L TBI & 2.5L Flex-Fuel 10-14 @ Idle
(1) Ignition timing on 2.2L turbo engine is computer controlled and is not adjustable.
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