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Home › Mitsubishi › 2003 › Montero Sport LS, 4WD › Repair and Diagnosis › Engine Performance › Ignition System › On-Vehicle Service › Spark Plug Test

Spark Plug Test

  1. Remove the spark plug and connect to the spark plug cable.
    Fig 1: Connecting Spark Plug To Spark Plug Cable
    G01871224Courtesy 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 For Defective Insulation
    G01871225Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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