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Home >> Mazda >> 2014 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System [LF] >> Spark Plug Inspection >> Plug Gap Inspection

Plug Gap Inspection

CAUTION:
  • To avoid possible damage to the tip, do not adjust the plug gap.
  • To prevent damaging the tip, use a wire type plug gap gauge when inspecting the plug gap.
  1. Measure the spark plug gap using a wire type plug gap gauge.
    • If not within the standard specification, replace the spark plug.

    Spark plug gap 

    Standard: 1.25-1.45 mm {0.050-0.057 in} 

    New spark plug (reference): 1.25-1.35 mm {0.050-0.053 in}