Spark Plug: Testing and Inspection

CAUTION: Use care not to allow foreign matter to enter through plug holes.

INSPECTION
1. Check the spark plugs for the following:
a. Broken insulator
b. Worn electrode
c. Carbon deposits
d. Damaged or broken gasket
e. Burnt condition of porcelain insulator at spark gap.

NOTE: Dark deposits indicate too rich a fuel mixture, light (white) deposits indicate too lean a fuel mixture, advanced ignition timing or insufficient plug torque.

2. Check plug gap using a plug gap gauge and adjust if necessary.

Spark Plug Gap: 1.0 - 1.1 mm (0.039 - 0.043 in)
Spark Plug Torque: 20 - 29 Nm (14 - 22 ft.lb)