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.)