Ignition Timing: Adjustments

Tachometer Hookup:

Fig. 220 Check Engine Connector:

1. Start engine and allow to reach normal operating temperature.
2. Connect a tachometer test probe to terminal IG of the check connector, Fig. 211

NOTE: Never let the tachometer lead touch ground as this could cause damage to the igniter and/or coil. Be sure to check that your tachometer is compatible with this ignition system. Consult the operating manual for your instrument.

3. Using a service wire, connect terminals T and E1 of the check connector, Fig. 220

Fig. 223 Ignition Timing (10):

4. Check idle speed.

Idle Speed: 800 rpm

5. Using a timing light, verify that the timing mark on the timing cover is aligned with the mark on the crankshaft pulley, Fig. 223

Ignition Timing: 10° BTDC at idle

6. Tighten the distributor bolt and recheck the ignition timing.
7. Remove service wire.
8. Check idle advance timing with service wire removed.

Ignition Timing: 8° BTDC at idle

9. Check idle speed and adjust if necessary, (Refer to adjustment procedure).
10. Disconnect tachometer and timing light from engine.