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Home >> Jeep >> 1991 >> Wrangler Base, 2.5 P >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Secondary Spark Check >> Spark Test
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Spark Test

  1. Remove coil wire from distributor cap. Hold end of cable about 1/4" from ground. Crank engine. Spark should be present and constant. If spark is not present and constant, check coil and coil wire resistance. Perform IGNITION PRIMARY CHECK .
  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.