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Replace Car Spark Plugs

Model: Subaru Impreza MK 4 - Years 2011-2016
Part: Spark plugs

In the following steps, you will learn how to correctly change the spark plugs in your car. The only way to know when a spark plug should be replaced is to measure the electrode gap. This measurement is found in both the maintenance manual and on the spark plug itself in newer models. First, disconnect the connectors from the caps on top of the spark plugs, and only then disconnect the caps. Do not use tools like screwdrivers to avoid further damage. Finally, to remove the spark plugs, use the specific spanners indicated in the maintenance manual.

Updated on 22 February 2026 by ScegliAuto

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