Ignition Timing: Adjustments
PROCEDURE1. WARM UP ENGINE
- Allow the engine to warm up to normal operating temperature.
Toyota Hand-Held Tester Connection:
2. CONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL
- Connect the TOYOTA hand-held tester or OBD II scan tool to the DLC3.
Please refer to the TOYOTA hand-held tester or OBD II scan tool operator's manual for further details.
3. CONNECT TIMING LIGHT TO ENGINE
4. CHECK IDLE SPEED
- Race the engine speed at 2,500 rpm for approx. 90 seconds.
- Check the idle speed.
Idle speed: 700 ± 50 rpm
5. INSPECT AND ADJUST IGNITION TIMING
TE1 To E1 Connection:
- Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
- Using a timing light, check the ignition timing.
Ignition Timing Inspection:
Ignition timing: 10 ± 2° BTDC @ idle
(Transmission in neutral position)
Ignition Timing Adjustment:
- Loosen the nut, and adjust by turning the distributor.
Ignition timing: 10° BTDC @ idle
(Transmission in neutral position)
- Tighten the nut, and recheck the ignition timing.
Torque: 19 N.m (195 kgf.cm, 14 ft.lb)
- Remove the SST from the DLC1. SST 09843-18020
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 TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL