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Home >> Mazda >> 2021 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Spark Plug Inspection >> Resistance Inspection
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Resistance Inspection

  1. Measure the resistance of the spark plug using a ohmmeter as shown in the figure.
    G09074508Courtesy of MAZDA MOTORS CORP.
    • If not within specification, replace the spark plug.

      Spark plug resistance [25°C {77°F}] 

      3.0-7.5 kilohms