Engine Misfire Due to Failed Spark Plug Wires on Subaru Impreza WRX STI

Sometimes the Check Engine Light illuminates because the computer detects misfires. Subaru released an improved spark plug wire set to solve the problem. The ignition coil should also be inspected for carbon tracks or short circuits between the contacts.

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Average mileage: (–)
7 model years affected: 2004, 2005, 2006, 2007, more2008, 2009, 2010
7 people reported this problem
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