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Home >> Mitsubishi >> 2012 >> Galant ES >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Ignition System >> On-Vehicle Service >> Spark Plug Test

Spark Plug Test

  1. Remove the spark plug and connect to the ignition coil.
    Fig 1: Spark Plug
    G06708067Courtesy 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: Defective Insulation
    G06717029Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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