July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Resistance Inspection

Measure the resistance of the spark plug using a tester as shown in the figure.
- If not within the specification, replace the spark plug.
Resistance
1. 2-20 kilohms [25°C {77 °F}]
Fig 1: Measuring Resistance Of Spark Plug
Courtesy of MAZDA MOTORS CORP.