Spark Plug Gap Check

Check the plug gap with the wire type plug gauge. Replace it if the limit is exceeded.

Standard value: 0.5 - 0.6 mm (0.020 - 0.023 inch) 

Limit: 0.75 mm (0.029 inch) 

Fig 1: Measuring Spark Plug Gap

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.