Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

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Spark Plug: Testing and Inspection





On-vehicle Inspection

Inspect Spark Plug
1. Inspect the electrodes(A) an ceramic insulator(B).




Inspection Of Electrodes





2. Check the electrode gap (A).

Standard : 1.0 - 1.1 mm (0.0394 - 0.0433 in.)