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    Missfire No.1 and 3 Cylinder, Car shakes on idle, Oil on Spark Plug Thread

    Hi everyone, I hope you guys can help me fix this before I take it to the shop. Long story short, here's what I did 4 months ago. 1. Replaced valve cover and gaskets 2. Replaced spark plugs and wires 3. Installed Oil Catch Can 4. Big 3 upgrades A couple of days ago I filled up gas and CEL was...

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