Note: Depending on the configuration, spark plugs with two electrodes may be installed.
1. Disconnect the high-voltage wires from the spark plugs.
2. Remove the spark plugs using a 16mm spark plug wrench.
3. Clean the spark plugs using a sandblaster or a wire brush.
4. Visually inspect the spark plugs for wear on the electrodes, damage to the threads or insulator. Replace the spark plugs if necessary.
Recommended spark plugs:
3S-FE, 4S-FE:
- ND — K20TR11
- ND — K20R-U11
5. Adjust the gap between the electrodes by bending only the side electrode.
Nominal clearance - 1.1 mm
6. Install the spark plugs and tighten them.
Tightening torque - 18 Nm
7. Connect the high-voltage wires to the spark plugs.