Ignition Timing: Adjustments

- Start engine and warm it up to normal operating temperature.
- Make sure that all of electrical loads except ignition are switched off.
- Check to be sure that idle speed is within specification.
- Set timing light to No. 1 high tension cord.

"Fixing" Ignition Timing:

- Remove monitor coupler cap beside ignition coil.
- Connect D and E terminals of monitor coupler or E to body by using service wire so that ignition timing is fixed on initial one.

NOTE: Using timing light, check to make sure that ignition timing doesn't change even when engine speed is increased. If it does, that indicates ungrounded E terminal which prevents accurate inspection and adjustment. Therefore, be sure to ground it securely.

Timing Marks:

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

BASE TIMING
6° ± 1° BTDC at 850 ± 50 rpm
Ignition order 1 - 3 - 4 - 2

Adjusting Ignition Timing:

- If ignition timing is out of specification, loosen flange bolts, adjust timing by turning, distributor assembly while engine is running, and then tighten bolts.
- After tightening distributor flange bolts, recheck that ignition timing is within specification.

TIGHTENING TORQUE
10-16 N.m (1.0-1.6 kg-m, 7.0-11.5 lb-ft)

- After checking and/or adjusting, disconnect service wire from monitor coupler.

NOTE: In this state (test switch terminal ungrounded, idle switch ON and car stopped), ignition timing may vary more or less of initial ignition timing but it is nothing abnormal.

- Check that increasing engine speed advances ignition timing. If not, check TPS (idle switch), test switch terminal circuit, engine start signal circuit and ECM.