Ignition Timing and Adjustment

Covers:

Timing
  1. Start the engine and allow it to warm to normal operating temperature.
  2. Turn off all electrical loads (stereo, lights, climate control, etc.).
  3. Connect a timing light to the engine.
  4. Find the double wire spark output (SPOUT) connector near the Data Link Connector. Remove shorting bar from the SPOUT connector.
  1. Using the timing light, check the engine timing. Timing should be 10° ±1° before top dead center. If timing is not within specification, proceed to Adjustment below.
NOTE: When timing is complete, be sure to replace the SPOUT shorting bar, if removed.

Adjustment
  1. Loosen the distributor lock bolt just enough to rotate the distributor housing.
  1. Slowly turn the distributor housing to make the adjustment.
  1. Recheck the timing.
  2. When the timing adjustment is complete, tighten the distributor lock bolt to 14-19 ft/lbs (19-25 N·m).

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