Ignition Timing: Testing and Inspection

IGNITION TIMING INSPECTION AND ADJUSTMENT
1. WARM UP ENGINE.
- Allow the engine to warm up to normal operating temperature.

2. CONNECT TACHOMETER AND TIMING LIGHT TO ENGINE.



- Connect the tester probe of a tachometer to terminal IG- of the data link connector (DLC1).

NOTICE:
* Never allow the tachometer terminal to touch ground as it could result in damage to the igniter and/or ignition coil.
* As some tachometers are not compatible with this ignition system, we recommend that you confirm the compatibility of your unit before use.

3. CHECK IDLE SPEED.



(a) Race the engine speed at 2,500 rpm for approx. 90 seconds.



(b) Check the idle speed.

Idle speed: 700 ± 50 rpm

4. ADJUST IGNITION TIMING.



(a) Using a jumper wire or special service tool (SST 09843-18020), connect terminals TE1 and E1 of the data link connector (DLC1).



(b) Using a timing light, check the ignition timing.

Ignition timing: 10° ± 2° BTDC @ idle
(Transmission in neutral position)




(c) Loosen the nut, and adjust by turning the distributor.

Ignition timing: 10° BTDC @ idle
(Transmission in neutral position)

(d) Tighten the nut, and recheck the ignition timing.

Torque: 19 Nm (14 ft.lb)




(e) Remove the jumper wire (or SST) from the DLC1.

5. FURTHER CHECK IGNITION TIMING.



- HINT: The timing mark moves in a range between 7° and 19°.

Ignition timing: 7° - 19° BTDC @ idle
(Transmission in neutral position)

6. DISCONNECT TACHOMETER AND TIMING LIGHT FROM ENGINE.