Ignition Timing: Adjustments

Idle Speed Adjustment:

1. Apply parking brake. Ensure that vehicle is in "P" (A/T) or neutral (M/T).
2. Warm engine to operating temperature.
3. Turn all electrical loads "OFF."
4. Connect timing light.
5. Install a jumper wire between data link connector terminals GROUND and TEN.

IG Terminal:

6. Connect tachometer positive lead to data link connector IG terminal and negative lead to negative battery post.

Crankshaft Pulley:

7. Inspect ignition timing:

TIMING: 10° ± 1° BTDC @ 700 - 800 rpm

8. If marks are not aligned, loosen mounting bolts and turn distributor until timing is within specification.
9. Tighten bolts:

TORQUE: 14 - 19 ft lb (19 - 25 Nm)

10. Make sure timing did not move when bolts were tightened.
11. Remove test equipment and jumper wire from data link connector.