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Replacing Engine Spark Plugs

Model: Toyota Yaris Xp90 - Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011
Part: Spark plugs

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Video tutorial

To avoid mixing up the cables, disconnect one spark plug at a time. Before proceeding with the removal, thoroughly clean the wells with compressed air to eliminate any dirt that could fall into the combustion chamber.

Using a 10mm socket wrench, unscrew the sealing nut of the first spark plug and pull the boot upwards. 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, again using the appropriate socket and gently turning it to ensure it screws in correctly. If you encounter resistance, remove it and try again.

The spark plugs should be tightened with a torque wrench; if you do not have one, screw them in without over-tightening. Proceed with the same operation for the other spark plugs.


Updated on 5 February 2026 by ScegliAuto


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