Ignition Timing: Adjustments

Set timing at Before Top Dead Center, unless otherwise specified. Set timing below rpm setting listed or at idle if not specified.

Reset timing only if more than plus or minus 2 degrees from listed specification.

Disconnect and plug distributor vacuum hose as equipped.

On engines equipped with dual-mode ignition timing disconnect third three-pin connector from sensor.

Engines with EEC III, system not adjustable.

Engines with ignition module part number 12A244, disconnect the two-wire connector (yellow & black wires) and jump the module connector pins.

Engines with EEC IV, disconnect single wire, connector or shorting bar from two-wire connector at distributor.

With "Positive Buy" ignition, (identified by a Torx-head distributor holddown bolt) plus or minus 4 degrees.

Timing must be set to specifications shown on emission decal if different from setting listed.