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Home › Mitsubishi › 2008 › Galant ES › Repair and Diagnosis › Engine Performance › Tune-Up › Ignition System › On-Vehicle Service › Ignition Coil Check › Spark Plug Test

Spark Plug Test

  1. Remove the spark plug and connect to the ignition coil.
    Fig 1: Removing Spark Plug
    G04254016Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  2. Ground the spark plug outer electrode (body), and crank the engine.

    Check that there is an electrical discharge between the electrodes at this time.

    Fig 2: Checking Spark Plug
    G04254017Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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