Execution order
1. Disconnect the wire from the negative terminal of the battery. Using the tip, disconnect the high-voltage wires from the spark plugs.
Warning: When disconnecting spark plug wires from spark plugs, pull on the wire tip, not the wire, as it may be damaged.
2. Clean the spark plugs with compressed air to prevent dirt from getting into the engine cylinders after unscrewing the spark plugs. Unscrew the spark plug using a spark plug wrench. To avoid damaging the spark plug, install the spark plug wrench strictly along the spark plug axis.
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3. Check spark plugs for the following defects:
- 1) damage to the insulator;
- 2) worn electrodes;
- 3) carbon deposits;
- 4) damage to the gasket;
- 5) the condition of the insulator at the tip of the spark plug.
4. Use a wire template to check the spark plug gap. The gap is adjusted by bending the side electrode.
The article is borrowed from the website: www.hyundaibook.ru
The spark plug gap is very important because if the gap is too big or too small, the spark size changes, which leads to a decrease in engine efficiency. The gap must always meet technical requirements.
The central electrode must not be bent under any circumstances, as this may lead to breakage of the insulator and failure of the spark plug. A special tool must be used to bend the side electrode of the spark plug.
Spark plug gap: 1.0-1.1 mm
5. Screw the spark plug into the cylinder head.
Tightening torque: 20-30 Nm