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

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Spark Plug: Testing and Inspection

INSPECT SPARK PLUG




a. Clean the spark plugs.

Air pressure: Below 588 kPa (6 kg/sq.cm, 85 psi)

Duration: 20 seconds or less




b. Check the spark plug for any damage on its thread and insulator.




If there is damage, replace the spark plug.




c. Adjust electrode gap.

Electrode gap: 1.0 - 1.1 mm (0.039 - 0.043 in.)

Maximum electrode gap: 1.46 mm (0.057 in.)