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Replacing Engine Spark Plugs

Model: Mazda 3 BK, MK 1 - Years: 2003, 2004, 2005, 2006, 2007, 2008, 2009
Part: Spark plugs

Video tutorial

Purchase the correct spark plugs for your engine type. 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 10mm socket wrench, unscrew the retaining nut of the first spark plug and pull the boot upwards.

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

Using the appropriate spark plug socket, which has a rubber gripping device, gently insert it onto the spark plug head and unscrew it. Proceed carefully to avoid dropping 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, ensuring it screws in properly without over-tightening.


Updated on 8 February 2026 by ScegliAuto


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