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Home >> Mercury >> 1996 >> Tracer LTS, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Basic Engine Testing - 1.8L >> Ignition Checks >> Engine Controls - Basic Engine Testing - 1.8L >> Check For Spark

Check For Spark

  1. Disconnect a spark plug wire from spark plug. Connect a Spark Tester (D81P-6666-A) between spark plug wire and ground. Crank engine and check for a strong consistent spark. Repeat test for each spark plug wire. If no spark is present, go to next step. If spark is inconsistent, check distributor cap, rotor and spark plug wires. If spark is okay, check fuel system. See FUEL SYSTEM  .
  2. Remove high tension coil lead from distributor cap. Connect a Spark Tester (D81P-6666-A) between coil wire and ground. Check spark while cranking engine. If no spark is present, go to next step. If spark is consistent, check distributor cap and rotor.
  3. Ensure distributor rotor turns while cranking engine. Repair as necessary. Using a DVOM, check resistance of coil high tension wire. Coil high tension wire resistance should be 4000-7000 ohms per foot. Replace as necessary. If resistance is okay, go to next step.
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