## Spark Plug Inspection

1. | Inspect the electrodes and ceramic insulator. #### Burned or worn electrodes may be caused by: Advanced ignition timing Loose spark plug Plug heat range too hot Insufficient cooling #### Fouled plug may be caused by: Retarded ignition timing Oil in combustion chamber Incorrect spark plug gap Plug heat range too cold Excessive idling/low speed running Clogged air cleaner element Deteriorated ignition coils

2. | Check the electrode gap (A). If the gap is over the standard, adjust the gap with suitable gapping tool.
Electrode Gap:
Standard (New): | 1.0-1.1 mm (0.039-0.043 in.)

3. | Replace the plug at the specified interval, or if the center electrode is rounded (A). Use only the spark plugs listed below.
Spark Pluges:
| BKR 6E-11 (NGK)
| K20PR-U11 (DENSO)

4. | Apply a small quantity of anti-seize compound to the plug threads, and screw the plugs into the cylinder head finger-tight. Then torque them to 18 N·m (1.8 kgf·m, 13 lbf·ft).