Ignition Timing: Testing and Inspection

1. WARM UP ENGINE
- Allow the engine to warm up to normal operating temperature.





2. CONNECT LEXUS HAND-HELD TESTER OR OBDII SCAN TOOL
- Connect the LEXUS hand-held tester or OBDII scan tool to the DLC3.

Please refer to the LEXUS hand-held tester or OBDII scan tool operator's manual for further details.

3. CONNECT TIMING LIGHT TO ENGINE





4. CHECK IDLE SPEED

(See step 3 in idle speed inspection) Testing and Inspection

5. INSPECT AND ADJUST IGNITION TIMING
- Using SST, connect terminals TE1 and E1 of the DLC 1.
SST 09843-18020





- Using a timing light. check the ignition timing.

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





- Loosen the nut, and adjust by turning the distributor.
- Tighten the nut. and recheck the ignition timing.

Torque: 19 N.m (195 kgf.cm. 14 ft.lb.)

- Remove the SST from the DLC1.
6. FURTHER CHECK IGNITION TIMING

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

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

7. DISCONNECT TIMING LIGHT FROM ENGINE
8. DISCONNECT LEXUS HAND-HELD TESTER OR OBDII SCAN TOOL