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Home >> Jaguar >> 1988 >> XJ-SC >> Repair and Diagnosis >> Engine Performance >> Ignition System - LUCAS Electronic >> Testing >> System Spark Check
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System Spark Check

  1. Disconnect high tension wire from center of distributor cap. Hold wire about 1/4" from an engine ground.
  2. Crank engine. If a good spark is obtained, check spark plug wires, spark plugs, distributor cap and rotor. If no spark or poor spark is obtained, go to next test.