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Home >> Mitsubishi >> 2003 >> Montero XLS >> 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: Removing Spark Plug
    G01849984Courtesy 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 Electrical Discharge
    G01849985Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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