Spark Plug: Testing and Inspection

INSPECT SPARK PLUG




a. Clean the spark plugs.
If the electrode has the traces of wet carbon, clean the electrode with a spark plug cleaner then dry it.

Air pressure: Below 588 kPa (6kg/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 the electrode gap.

Electrode gap: 0.7 to 0.8 mm (0.028 to 0.031 in.)