2. Disconnect high voltage wires from spark plugs.
3. Turn out spark plugs.
4. Check spark plug electrodes.
A) Damage and wear to the electrodes can be caused by:
- excessive ignition timing;
- loosening of the spark plug;
- insufficient cooling;
- heat number is too high;
b) Plug fouling can be caused by:
- insufficient ignition timing;
- oil in the combustion chamber;
- incorrect spark plug gap;
- heat number is too low;
- long idling or long" driving at low speed;
- air filter clogging;
- damaged ignition coil.
5. Visually inspect the threads, insulator, and electrodes for damage. If there is any deviation, replace the spark plugs.
Recommended spark plugs:
L13A (ordinary type):
- NGK — BKR6E-11
- DENSO — K20PR-U11
L15A ("iridium" spark plug):
- NGK — IZFR6K13
- DENSO — SKJ20DR-M13
Make sure the center electrode is cylindrical. If the electrode shape is hemispherical, replace the spark plug.
6. Check the gap between the spark plug electrodes.
Rated Clearance:
- L13A - 1.0-1.1 mm
- L15A - 1.2-1.3 mm
Editor's note: firm "Honda" recommends replacement "iridium" spark plugs every 100,000 km of the car. However, taking into account the operation of the car and the quality of gasoline in Russia, we recommend replacing it every 80,000 km of the car’s run or if there are signs of their actual failure.
7. Clean spark plugs.
A) If the electrodes: have wet traces of carbon deposits, dry them and then remove them with a suitable solvent. If the electrodes have traces of oil, then first remove them with gasoline.
b) Then clean the spark plugs with a spark plug cleaner, blowing air at a pressure not exceeding 588 kPa (6 kg/cm2) for no more than 20 seconds.
Note ("iridium" candles):
- Never use a wire brush to clean this type of spark plug.
- Never attempt to adjust the gap of a used spark plug.
8. Replace spark plugs.
- Tightening torque - 18 Nm
9. Connect high voltage wires.