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spark plugs plug firing

  1. 4.6L Tech
    I have a 2000 Mustang GT with 147,000 miles and a manual tranny. Two days ago, my car began to sputter really bad unless over 2000 RPM. I figured it was condensation in my fuel lines because that has happened before. But today the CEL came on throwing a "cylinder 8 misfire" code. I had the same...