Resistance Inspection

1. Measure the resistance of the spark plug using a tester as shown in the figure.
   Fig 1: Measuring Resistance Of Spark Plug Using Tester

   Courtesy of MAZDA MOTORS CORP.
   • If not within specification, replace the spark plug.

Spark plug resistance [25°C {77 °F}] 

1. 3.0-7.5 kilohms