- every 2 years or 48,000 km on CR-V 1997-00 and 4-cylinder Odyssey
- every 7 years or 168,000 km on a 6-cylinder Odyssey.
It should be borne in mind that the gap between the spark plug electrodes increases by about 0.025 mm every 4000 km, as a result of which the efficiency and engine power decrease. When selecting a candle according to the glow number, be guided by the most frequent travel conditions (photo). It is recommended, however, to use the spark plugs specified by the manufacturer.
Candles are replaced separately. Label high voltage wires to be disconnected before replacement. On engines with an ignition distributor, mark the spark plug wire from the 1st cylinder.
Candle: 1. The location of the most likely occurrence of cracks; 2. Porcelain insulator; 3. Clip; 4. Adjustable gap between electrodes; 5. Central electrode. When adjusting the gap, process with a file to give a flat shape, it is forbidden to bend; 6. Side electrode. The gap is set by bending this electrode
Thermal mode of operation of the candle
1. The closer the center electrode is to the cylinder block, the "colder" (heat is dissipated faster, small thermal cone).
2. The farther the center electrode is from the heat sinks of the cylinder block, the "hotter" (heat is dissipated more slowly, large thermal cone).
3. These spark plugs are recommended for short trips with frequent stops.
4. Large loads, high speeds.
5. A long insulator slows down heat dissipation and extends the thermal range of the candle. The candle is hot.
6. A short insulator accelerates heat dissipation and reduces the thermal range of the plug. The candle is cold.
CR-V and 4-cylinder Odyssey models
1. Disconnect the battery from the ground.
2. On a cold engine, disconnect the wires from the spark plugs by holding the cover, turning and pulling up. If the cover is stuck, then turn it in both directions 1/4 turn.
3. Without removing the wires from the mounting blocks, take them to the side (remove pads from brackets).
4. Turn out a candle a special key.
5. Check the condition of the case (wire end), check the gap between the electrodes, which should be 1.0-1.1 mm. If the cover is damaged, then replace the wire with the tip.
6. Wrap the candle by hand until it stops. Use an extension to screw in the spark plug if necessary (piece of rubber hose).
7. Tighten the spark plug to 18 Nm.
8. Lubricate the spark plug insulator with silicone compound and put on the cover until it clicks.
6-cylinder Odyssey (issue since 1999)
On the engines of these cars (3.5 l) an ignition system without a distributor is provided. Each spark plug has an ignition coil. Candles of these engines are equipped with platinum electrodes, the gap in which cannot be adjusted. If the gap is more than normal, then the candle changes.
1. Disconnect the battery from the ground.
2. Get from a cover of a head of cylinders of an overlay.
3. Designate and disconnect connectors from coils.
4. Turn away screws and remove coils.
5. Turn out the candle with a special key.
6. Check the gap between the electrodes, which should be 1.0-1.1 mm. If the gap is greater than 1.3 mm, replace the spark plug.
7. Wrap the candle by hand until it stops. Use an extension to screw in the spark plug if necessary (piece of rubber hose), so as not to break the thread.
8. Tighten the spark plug to 18 Nm and install all removed parts.
Checking and adjusting the clearance
Check the condition of the spark plugs (photo). The normal working appearance of the candle is indicated by the sandy or grayish color of the insulator head. Before adjusting the gap, file the surfaces of the electrodes with a file, giving them a flat shape. Sharp edges and bumps reduce the breakdown voltage by up to 50%. The gap is checked with a feeler gauge. With a given gap, the probe should pass in the gap under a small effort. If necessary, bend the side electrode without applying excessive force.
Attention! Gap in spark plugs with platinum electrodes (on Odyssey V6) not regulated.