Spark Plug: Testing and Inspection

1. DISCONNECT HIGH-TENSION CORDS FROM SPARK PLUGS.
(See Ignition Cable - Service and Repair)
2. REMOVE SPARK PLUGS.





- Using a 16 mm plug wrench, remove the spark plug.
3. CLEAN SPARK PLUGS.





- Using a spark plug cleaner or wire brush, clean the spark plug.
4. VISUALLY INSPECT SPARK PLUGS.





- Check the spark plug for electrode wear, thread damage and insulator damage.
- If abnormal, replace the plugs.

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

5. ADJUST ELECTRODE GAP





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

- Correct electrode gap: 0.8 mm (0.031 in.)

6. INSTALL SPARK PLUGS.





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

- Torque: 20 Nm (14 ft lb)

7. RECONNECT HIGH-TENSION CORDS TO SPARK PLUGS.
(See Ignition Cable - Service and Repair)