Ignition Timing: Adjustments

ADJUSTMENT CONDITIONS
^ Coolant temperature, 185°F-205°F.
^ All accessories, Off.
^ Transmission, N (Neutral).
^ Parking Brake, ON.

PROCEDURE

How To Use Connector:

1. Insert a paper clip (from harness side) in the connector located between the noise filter and the ignition coil, and connect the tachometer.

Timing Connector:

CAUTIONS:
^ The connector should not be separated.
^ The paper clip should be inserted along the terminal surface.
^ The paper clip should be inserted at the correct side. If it is inserted incorrectly, the paper clip may become caught and cannot be removed.

2. Connect timing light.

Ignition Timing Adjustment Connector:

3. With the engine stopped, connect a lead wire, between the terminal for ignition timing adjustment (located in the engine compartment) and ground.
4. Start and run the engine at curb idle speed.

Standard value: Curb idle speed 750 +/- 100 RPM

Ignition Timing Mark:

5. Check base ignition timing and adjust if necessary.

Standard value: Base Timing 5° +/- 3° BTDC

6. If the timing is incorrect, loosen the crank angle sensor holding nut, and then turn the crank angle sensor until the timing is correct.

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

7. After adjustment, securely tighten holding nut.

CAUTION: Be careful, when tightening the nut, that the crank angle sensor does not move.

8. Stop the engine.
9. Disconnect the lead wire connected in step 2.
10. Start and run the engine at curb idle speed.
11. Check to be sure that the idle ignition timing is correct.

Standard value: Idle Timing 5° BTDC