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Home >> Volvo >> 2004 >> S40 L4-1.9L Turbo VIN 27 B4204T4 >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Spark Plug >> Service and Repair
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Spark Plug: Service and Repair






Replacing spark plugs

Special tools:
999 5702 Socket 999 5702 Socket

Removing sparkplugs




- Remove both engine covers.
- Disconnect the connectors.
- Disconnect the HT lead.
- Remove the mounting screws.
- Pull off the ignition coils.
- Remove the spark plug with special tool 999 5702 Socket 999 5702 Socket.

Installing spark plugs:




- Check the rubber and the spring inside. Replace if necessary.
- Check the spark gap: 0.7-0.8 mm.
- Install the spark plugs. Screw the spark plugs in until the gasket is pressed against the cylinder head.
Tightening torque 25 Nm. Use special tool 999 5702 Socket 999 5702 Socket.
- Position the ignition coils. Press the ignition coils into place.
- Tighten the screw. Tightening torque 10 Nm.
- Connect the high tension cables.
- Reconnect the connectors.

Note! The gray connector is for the left coil (cylinders 2 and 3), the blue connector is for the right coil (cylinders 1 and 4).

- Check the function.
- Install both engine covers.

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