2005-2007 Ford Focus Spark Plugs Replacement

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Place the ignition coil and dust boot back over the spark plug by pushing down and twisting it into place.
Reconnect the ignition coil electrical connector by snapping it back into place.
After installing your new spark plugs, compare the old ones to a spark plug wear chart to determine if there are any issues with the way your engine is running. A similar chart can be found in the back of all Haynes repair manuals.

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