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Spark Plug Test

  1. Remove the spark plug and connect to the spark plug cable.
    Fig 1: Removing Spark Plug
    G02417511Courtesy 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
    G02417512Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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