Ignition timing

Warm up engine
Allow the engine to warm up to normal operating temperature.
Connect Toyota hand-held tester or OBDII scan tool
1. Connect the TOYOTA hand-held tester or OBDII scan tool to the DLC3.
2. Please refer to the TOYOTA hand-held tester or OBDII scan tool operator’s manual for further details.
Connect timing light to engine
Check idle speed (See page EM-11)
Inspect and adjust ignition timing
1. Using SST, connect terminals TC and E1 of the DLC1
  SST 09843-18020
2. Using a timing light, check the ignition timing.
  Ignition timing: 10 ± 2° BTDC @ idle
3. Loosen the nut, and adjust by turning the distributor.
  Ignition timing: 10° BTDC @ idle
  (Transmission in neutral position)
4. Tighten the nut, and recheck the ignition timing.
  Torque: 19 N·m (195 kgf·cm, 14 ft·lbf)
5. Remove the SST from the DLC1.
  SST 09843-18020
Further check ignition timing
Ignition timing: 7 - 19° BTDC @ idle
(Transmission in neutral position)
The timing mark moves in a range between 7° and 19°.
Disconnect timing light from engine
Disconnect Toyota hand-held tester or OBDII scan tool

This guide is based on the book edition Toyota (RM502U, 1997)

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