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Replacing Engine Spark Plugs

Model: Renault Megane Megane 2 - Years 2002-2010
Part: Spark plugs

Disconnect the negative terminal of the battery. Gently remove the plastic cover protecting the engine by lifting it upwards. To avoid confusing the cables, disconnect only the first spark plug. Use a 10 mm socket to unscrew the retaining nut of the first spark plug and pull the connector upwards. The first spark plug is located at the bottom of the well. Before proceeding with disassembly, thoroughly clean the wells with compressed air to remove any dirt that could fall into the combustion chamber. Using the appropriate spark plug socket, which has a rubber grip, gently insert it onto the spark plug and unscrew 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, always using the appropriate socket and turning it gently to ensure it screws in correctly. If you encounter resistance, remove it and try again. Spark plugs should be tightened with a torque wrench; if you do not have one, tighten without overdoing it. Repeat the same operation with the other spark plugs.

Updated on 2 February 2026 by ScegliAuto

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