Ignition Timing: Adjustments

NOTE: Before starting engine, place transmission gear shift lever in "Neutral" (shift selector lever to "P" range for A/T model), and set parking brake.

Inspection and Adjustment
1. Start engine and warm it up to normal operating temperature.
2. Make sure that all of electrical loads except ignition are switched off.
3. Check to be sure that idle speed is within specification.





4. Set timing light to No. 1 high tension cord.
5. remove monitor coupler cap beside ignition coil.
6. Connect D and E terminals of monitor coupler or E terminal to body by using service wire. This will cause ignition timing to be in a fixed state.





7. Using timing light, check that timing is within specification.

Initial timing (test terminal grounded): 5° ± 1° BTDC





8. If ignition timing is out of specification, loosen flange bolts. Adjust timing by turning distributor assembly while engine is running, and then tighten bolts.

Torque: 12 - 18 Nm (9 - 13 ft lb)

9. After tightening distributor flange bolts, recheck that ignition timing is within specification.
10. After checking and/or adjusting initial ignition timing, disconnect service wire from monitor coupler.
11. With engine idling (test switch terminal ungrounded, idle switch ON, and car stopped), check that ignition timing is about 12° BTDC. (Constant variation within a few degrees from 12° indicates no abnormality but proves operation of electronic timing control system.) Also, check that increasing engine speed advances ignition timing.
- If above check results are not satisfactory, check throttle position sensor, test switch terminal circuit, and ECM.