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Alternate Timing Procedure

  1. Set parking brake and place transmission in Neutral (Drive for automatic transmissions). Start engine and run at idle to obtain normal operating temperature. Turn ignition off. Connect timing light using inductive pick-up or adapter. Do not puncture spark plug wire.
  2. Disconnect and plug 4 in. Hg vacuum switch hose (Red and Black wires connected to switch). Disconnect distributor vacuum advance hose and connect hose to 4 in. Hg vacuum switch. Disconnect wire connector from knock sensor, located in cylinder head.
  3. Using a jumper wire, ground knock sensor wire connector to engine block. Start engine. With engine at idle speed (solenoid energized), check timing. Adjust timing to one degree more than specification (if required). See Emission Control Label.
IGNITION TIMING SPECIFICATIONS (DEGREES BTDC@RPM)

Application Man. Trans. Auto. Trans.
50 State 9° @ 1600 9° @ 1600
High Altitude 16° @ 1600 16° @ 1600
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