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Intermittent Problems

  1. Attach modified spark plug, in turn, to 2 different spark plug wires. Crank engine. If there is no spark, repeat SYSTEM VOLTAGE CHECK WITH MODIFIED SPARK PLUG.
  2. If spark occurs from one or both wires, check pick-up coil resistance for 500-1500 ohms. If resistance is incorrect, replace pick-up coil. If resistance is okay, check for dwell increase from a high to low RPM.
  3. If dwell increases, check fuel system, spark plug wires, distributor cap and spark plugs. If no increase occurs, replace electronic module.
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