Engine Misfire Due to Failed Spark Plug Wires on Subaru Impreza Outback Sport

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: 104,000 (104,000–104,000)
Engine affected: 2.5L 4 Cylinder
6 model years affected: 2005, 2006, 2007, 2008, more2009, 2010
7 people reported this problem
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2009 Subaru Impreza Outback Sport - 2.5L 4 Cylinder 104,000 mi,
Check engine light came on while driving and showed cylinder 4 misfire. Leaking spark plug gasket.