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Troubleshooting a misfire in my 4.6L 3V V8. Ran rough this morning, pulled codes after work...misfire on 7. Replaced 7. First pic is old plug on right and brand new plug on left. Second pic is the same but the new plug after 1mi of test driving where the misfire returned. How concerned should I...

Greetings! I just bought a 2007 Sport Trac Build date 04/06 So Gen1 I guess, 102,000 miles and no idea really how the owner before treated it. After the sale I had the infamous misfire under load, original spark plugs, so I decided after reading all the horror stories on here, that it was worth...

Greetings all, Recently bought an 07 Sport Trac 3V V8 with the 6 speed 6R60 with 100,000. She's beautiful and I love her, but I'm having a repeatable misfire that threads on the internet have led me to believe is a spark plug/coil pack issue. I have a friend who has offered to help me with...

I've joined the forum after lurking for a while to try and learn more about maintaining my own vehicle, and first off, thank you very much. Just lurking here has given me a lot of help. I recently got an overheat in my 96 Ford Explorer 4WD, so I pulled over and shut down the engine, and then...