Cleaning And Adjustment

Fig 1: Adjusting Spark Plug Gap With Gap Gauging Tool

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

The plugs may be cleaned using commercially available spark plug cleaning equipment. After cleaning, file center electrode flat with a small point file or jewelers file before adjusting gap.

CAUTION: Never use a motorized wire wheel brush to clean spark plugs. Metallic deposits will remain on spark plug insulator and will cause plug misfire.

Adjust spark plug gap with a gap gauging tool (1).