Ignition Timing: Adjustments

ADJUSTMENT CONDITIONS:
Coolant temperature: 80-95°C (170-205°F)
Lamps, cooling fan, and all accessories: OFF
Transaxle range: Neutral (N or P for A/T)
Parking brake: On
Steering wheel: Neutral position

ADJUSTMENT PROCEDURES:
1. Install a tachometer and a timing light.





1) Disconnect the noise filter.
2) With SST (09273-24000), install a tachometer.
2. Run the engine for more than 5 seconds at an engine speed of 2,000 to 3,000 rpm.
- Run the engine at idle for 2 minutes.
3. Read the idling rpm. If it is not within the specified value, check the idle speed control system.
- Idle speed : 750 ±100 rpm

NOTE:
1) Do not use the scan tools.
If tested with the scan tool connected to the data link connector, the ignition timing will not be the basic timing but be the ordinary timing.
2) The engine speed indicated is a second of actual speed. In other words, the reading of the tachometer times 2 is actual speed.





4. With the engine stopped, connect a lead wire with alligator clips to the terminal for ignition-timing adjustment (located in the engine compartment), and ground it.
5. Run the engine and let it idle.





6. Check the basic ignition timing.
- Basic Ignition timing: 5° ±2° BTDC
7. If the timing is incorrect, loosen the crankshaft position sensor mounting nut, and rotate the crankshaft position sensor until the timing is correct.

NOTE: The ignition timing will be retarded, if the crankshaft position sensor is turned to the left and advanced if it is turned to the right.

8. After adjustment, securely tighten the mounting nut.
- Tightening torque: 10-13 Nm (100-130 kg/cm, 7-9 ft/lbs)

NOTE: Be careful, when tightening the nut, that the crankshaft position sensor does not move.

9. Stop the engine.
10. Disconnect the lead wire connected at step 4.
11. Start and run the engine at curb idle speed.
12. Check to be sure that the idling ignition timing is the correct timing.
- Actual Ignition timing: 8° BTDC

NOTE:
1. Actual ignition timing may vary, depending on the control mode of the engine control module. In such a case, re-check the basic Ignition timing. if there is no deviation, the Ignition timing Is functioning normally.
2. At high altitudes, more than approximately 700m (2,300 ft.) above sea level, the actual ignition timing is farther advanced to ensure good combustion.