Spark Plug: Testing and Inspection

IGNITION SYSTEM

ON-VEHICLE INSPECTION

INSPECT SPARK PLUGS
a. Disconnect the high-tension cords from the spark plugs.




b. Using a 16 mm plug wrench, remove the spark plug.




c. Using a spark plug cleaner or wire brush, clean the spark plug.
d. Check the spark plug for electrode wear, threads damage and insulator damage.
If abnormal, replace the plugs.

Recommended spark plugs:
- ND: K16R-U
- NGK: BKR5EYA




e. Carefully bend the outer electrode to obtain the correct electrode gap.

Correct electrode gap: 0.8 mm (0.031 in.)

f. Using a 16 mm plug wrench, install the spark plug.

Torque: 20 Nm (200 kg.cm, 14 ft.lb)

g. Connect the high-tension cords to the spark plugs.