Spark Plug: Testing and Inspection
INSPECT SPARK PLUG
a. Clean the 6 spark plugs.
Air pressure: Below 588 kPa (6 kgf/sq.cm, 85 psi)
Duration: 20 seconds or less
b. Check the appearance.
1. Check the spark plug for any damage on its thread and insulator.
If there is any damage, replace the spark plug.
c. Check the electrode gap.
Standard: 1.0 to 1.1 mm (0.039 to 0.043 in.) for new spark plug.
Maximum: 1.46 mm (0.057 in.)
If the result is greater than the maximum, replace the spark plug.