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INSPECTION & ADJUSTMENT

1990–96 Models
  1. Set the parking brake, start and run the engine until normal operating temperature is obtained. Keep all lights and accessories OFF and the front wheels straight-ahead. Place the transaxle in P for automatic transaxle or Neutral for manual transaxle.

    Fig. 1: Ignition timing adjustment connector — 1990–92 Mirage with 1.5L engine

    Fig. 2: Ignition timing adjustment connector — Mirage with 1.6L engine

    Fig. 3: Ignition timing adjustment connector — Galant with 2.0L engines

    Fig. 4: Ignition timing adjustment connector — 1992–96 Diamante

    Fig. 5: Ignition timing adjustment connector — 1994–96 Galant

    Fig. 6: Ignition timing adjustment connector — 1993–96 Mirage with 1.5L engine

    Fig. 7: Ignition timing adjustment connector — 1993–96 Mirage with 1.8L engine

  2. If not at specification, set the idle speed to the correct level.
  3. Turn the engine OFF. Remove the water-proof cover from the ignition timing adjusting connector, and connect a jumper wire from this terminal to a good ground. Refer to the corresponding illustrations for the correct location of the timing adjustment connector.
  4. Connect a conventional power timing light to the No. 1 cylinder spark plug wire. Start the engine and run at idle.
  5. Aim the timing light at the timing scale located near the crankshaft pulley.
  6. Loosen the distributor or crank angle sensor hold-down nut just enough so the housing can be rotated.
  7. Turn the housing in the proper direction until the specified timing is reached. Tighten the hold-down nut and recheck the timing. Turn the engine OFF.
  8. Remove the jumper wire from the ignition timing adjusting terminal and install the water-proof cover.
  9. Start the engine and check the actual timing (the timing without the terminal grounded). This reading should be approximately 5 degrees more than the basic timing. Actual timing may increase according to altitude. Also, actual timing may fluctuate because of slight variation accomplished by the ECU. As long as the basic timing is correct, the engine is timed correctly.
  10. Turn the engine OFF.
  11. Disconnect the timing apparatus and tachometer.
1997–00 Models

The ignition timing is controlled by the Engine Control Module (ECM) and is not adjustable. However it can be inspected using a scan tool.

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