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Replacing Engine Spark Plugs

Model: Mazda 6 GG, MK 1 - Years: 2002, 2003, 2004, 2005, 2006, 2007, 2008
Part: Spark plugs

See other generations:
Video tutorial

Disconnect the negative terminal of the battery. Gently remove the plastic cover protecting the engine by lifting it upwards.

To avoid confusion with the cables, disconnect only the first spark plug. Using a 10 mm socket spanner, unscrew the retaining nut of the first spark plug and pull the lead upwards.

The first spark plug is located at the bottom of the well. Before proceeding with removal, thoroughly clean the wells with compressed air to eliminate any dirt that could fall into the combustion chamber.

Using the appropriate spark plug tool, which has a rubber gripping device, gently insert it onto the spark plug head 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 tool, and turn it gently, ensuring 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 for the other spark plugs.


Updated on 2 February 2026 by ScegliAuto


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