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Basic Advance Timing

  1. Connect a tachometer between the negative side of coil and a good ground. Connect an adjustable timing light to No. 1 cylinder of engine. Connect a jumper wire between carburetor switch and a good ground.
  2. Be sure vacuum line is connected to vacuum transducer on computer. Start engine, set parking brake, place transmission in Neutral and warm to operating temperature.
  3. Ensure engine idle RPM is at or below 680-780 RPM (Calif. 2-Bbl.), 650-750 RPM (All Others). Aim timing light so basic timing signal is seen at timing plate. Basic timing should be 16° BTDC at idle RPM with transmission in Neutral and vacuum transducer hose connected.
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