Spark Plug: Testing and Inspection

1) Pull out high-tension cords by gripping their caps.
2) Remove ignition coil assembly.
3) Remove spark plug.
4) Inspect them for:
- Electrode wear
- Carbon deposits
- Insulator damage

5) If any abnormality is found, adjust air gap, clean with spark plug cleaner or replace them with specified new plugs.
- Spark plug air gap "a" :1.0 - 1.1 mm (0.039 - 0.043 in.)
- Spark plug type :
NGK BKR6E-11
DENSO K20PR-U11

6) Install spark plugs and torque them to specification.
Tightening Torque for spark plug 28 Nm (2.8 kg-m, 20.0 lb-ft)
7) Install ignition coil assembly.
8) Install high-tension cords securely by gripping their caps.