Ignition Timing: Adjustments

At slow idle and Before Top Dead Center, unless otherwise specified.

1981-89: Leave distributor vacuum hoses, as equipped, connected.

1988-89: On models w/o vacuum advance (EST), remove yellow cap from timing connector (located in left rear engine compartment or by coil) and jumper the two terminals.

1990: Jumper terminals of timing connector located on right side under dash. The connector has two wires leading to it and is blue in color.