Improved Spark Plug Wires for Misfire Issues on Subaru WRX STI

Submitted by Vehicle Owner · May 29, 2025
Published by RepairPal

Problem overview

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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