Spark Plug Check And Cleaning: Notes

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CAUTION:

Never attempt to adjust the gap of the iridium plug.
Do not attempt to clean the spark plug because it may result in damage to the electrode. However, if carbon deposits must be removed, using a sand blast type plug cleaner, complete the cleaning within 20 seconds to protect the electrode. Do not use a wire brush.

NOTE: Obey the maintenance interval of the relevant vehicle for the spark plug replacement. If the plug gap and insulation resistance are normal, check the plug state and clean it if necessary.

Fig 1: Identifying Spark Plug Cleaning

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.