Spark Advance Tests

PROCEDURE

1. Set basic timing. Refer to Ignition Timing Procedure in the ADJUSTMENTS Section.

2. Warm engine to operating temperature. The temperature sensor must be connected and working properly.

3. Raise and maintain engine speed to 2000 rpm. Wait one minute and check advance. The DRB II diagnostic tool SET ENGINE RPM test in SPECIAL FUNCTIONS mode can be used to raise and maintain engine speed.


WARNING: WHILE PERFORMING THESE TESTS, IT IS NECESSARY TO USE A METAL EXHAUST EVACUATION TUBE. THE USE OF A RUBBER HOSE MAY RESULT IN A FIRE DUE TO HIGH TEMPERATURES AND LONG TEST PERIOD.


NOTE: Replace the engine controller if the ignition timing fails to reach specified settings.