Ignition Timing: Adjustments

Fig. 220 Check Engine Connector:

Ignition Timing Mark:

1. Start engine and allow to reach normal operating temperature.
2. Connect a tachometer test probe to terminal IG of the check connector, Fig. 210
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
4. Check idle speed.

Idle Speed:
Ex. 4WD A/T 750 rpm
4WD A/T 850 rpm

5. Using timing light, verify that the timing mark on timing cover is aligned with the mark on the crankshaft pulley, Fig. 221

Ignition timing: 5°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: 10 - 14°BTDC at idle

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