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Secondary Circuit Check

CAUTION: When checking secondary voltage, do not remove spark plug wires from spark plugs No. 3 on 4-cylinder, No. 1 or 5 on 6-cylinder and No. 3 or 4 on V8 Engines.
  1. Remove coil wire from distributor cap. Use insulated pliers to hold wire approximately 1/2" from engine block or intake manifold. Crank engine and check for spark at gap.
  2. If no spark occurs, check resistance of secondary coil windings. SEE IGNITION COIL RESISTANCE CHECK. Place ohmmeter leads on both ends of coil secondary wire. Resistance should equal 5000 ohms per inch of wire or less. Replace ignition coil or wire if outside specification.
  3. If spark occurred in step 1), reconnect coil wire. Remove a spark plug wire and hold 1/2" from engine ground while cranking engine. If spark occurs, check fuel system, spark plugs and timing. If no spark occurs, check for defective rotor, distributor cap or spark plug wires.
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