Man o man what a great morning. I woke up and went and bought some autolite platinum plugs. My truck has been misfiring for like a month, and it was getting worse and worse. It finally tripped the CEL last night so I brought it to autozone and had it read. Cylinder 4 misfire. I needed a plug change anyways so I changed all my plugs today. WOWOWOWOW if feels so much better. This was the first time since I got my new tires that I could actually get them loose lol. It still has a slight stumble if you smash it from a dead stop, but compared to how it was running....it's a new truck.

*edited****Oh yea, it figures that Cylinder 4 had to be the hardest plug to get to...thanks a lot ford engineers hehe***

 

How many miles on the previous plugs?

 

I would have figured no. 7 and 8 would have been hard to get bieng under the fuel feed and return connections. That's good to hear about your fix.

 

The other plugs were from the factory and had 93k miles on them. They looked horrible. Instead of being gapped at .054, they were so worn out they were gapped at like, .9999999 it was ridiculous.