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Camshaft Retard Offset Adjustment



CAMSHAFT RETARD OFFSET ADJUSTMENT

Description:






TEST PROCEDURE
The ignition timing cannot be adjusted. The distributor may need adjusting to prevent crossfire. To insure proper alignment of the distributor, perform the following:

1. With the ignition OFF, install a scan tool to the DLC.
2. Start the engine and bring to normal operating temperature.

IMPORTANT: Cam Retard Offset reading will not be accurate below 1000 RPM.

3. Increase engine speed to 1000 RPM.
4. Monitor the Cam Retard Offset.
5. If the Cam Retard indicates a value of 0° +/-2°, the distributor is properly adjusted.
6. If the Cam Retard does not indicate 0° +/-2°, the distributor must be adjusted.


ADJUSTING PROCEDURE
1. With the engine OFF, slightly loosen the distributor hold down bolt.

IMPORTANT: Cam Retard Offset reading will not be accurate below 1000 RPM.

2. Start the engine and raise engine speed to 1000 RPM.

3. Using a scan tool monitor Cam Retard Offset.

4. Rotate the distributor as follows:
4.1. To compensate for a negative reading, rotate the distributor in the counterclockwise direction.
4.2. To compensate for a positive reading, rotate the distributor in the clockwise direction.

5. Repeat step 4 until 0° +/-2°, is obtained.

6. Turn the ignition OFF.

7. Tighten the distributor hold-down bolt to 3 Nm (25 lb. ft.).

8. Start the engine, raise engine speed to 1000 RPM and recheck Camshaft Retard Offset.