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.