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Replacing the Four Spark Plugs

Model: Volvo S40 MK 1 - Years 1995-2004
Part: Spark plugs

Start by removing the engine cover using a ratchet to undo the four screws. Before proceeding with disassembly, thoroughly clean the wells with compressed air to eliminate any dirt that could fall into the combustion chamber. At the bottom of the well is the first spark plug. Using a ratchet, undo the retaining screw of the coil connected to the first spark plug and pull the connector upwards. To avoid mixing up the wires, disconnect only the first spark plug. Using the special spark plug socket, which has a rubber gripping device, gently insert it onto the spark plug head and undo it. Be careful not to drop any foreign objects into the well. Replace the spark plug with one of the same model, carefully inserting it into the well, again using the special socket and turn it gently, ensuring it screws in correctly. If you feel resistance, remove it and try again. The spark plugs should be tightened with a torque wrench; if you do not have one, tighten without overdoing it. Proceed with the same operation for the other spark plugs.

Updated on 4 February 2026 by ScegliAuto

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