Checking spark plugs (Honda HR-V 1)

1. Check the electrodes and ceramic insulator:

Burning or wear of electrodes can occur due to:

Early ignition
Spark plug tightening is loose
Spark plug heat range too high
Insufficient cooling

Spark plug contamination can occur due to:

Late ignition
Oil entering the combustion chamber
Incorrect spark gap
Spark plug heat range too low
Long-term engine operation at idle/low speed
Clogged air filter element
Damage to high voltage wires

2. Check the spark gap.

Adjust the spark gap with a suitable tool.

If the center electrode is rounded as shown in the figure, replace the spark plug:

3. Apply a small amount of anti-seize compound to the spark plug threads and screw the spark plugs into the cylinder head by hand. Then tighten them to a torque of 18 Nm (1.8 kgf/m).