Ignition Timing: Adjustments

NOTE: Timing specifications are listed on the Vehicle Emissions Control Information label under the hood. Always follow the Vehicle Emissions Control Information label procedures first before using the following procedure.

PROCEDURE:

Set timing under the following conditions:

^ Normal operating temperature.
^ Air cleaner installed.
^ A/C "OFF".
^ Transmission in neutral.

Figure 1 Terminal Arrangement In Connector:

^ Put electronic spark timing (EST) in by pass mode. Connect a jumper lead between terminals A and B of the ALDL connector under the dash.

Connect timing light and adjust as necessary by loosening hold down bolt and rotating distributor.

Tighten hold down and recheck the timing. Stop the engine and connect SET TIMING connector. Clear ECM trouble code by disconnecting ECM power source.