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Home >> Jeep >> 1995 >> Wrangler S, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - 2.5L >> Ignition Checks >> Secondary Spark >> Spark Test
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Spark Test

  1. Remove coil wire from distributor cap. Position end of coil wire about 1/2" (13 mm) from block. Crank engine. Spark should be present and constant. If spark is not present and constant, check coil and coil wire resistance. See FAILURE TO START TEST  under IGNITION CHECKS.
  2. If coil wire spark is present, ensure spark reaches spark plugs. Check condition of rotor, cap, spark plug wires and spark plugs. Repair or replace if necessary.
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