I fixed the weird random misfires i was getting.

heres what you do. Replace the COP (coill on plug) spark plug boots. i put new pulg and new spark plug boots on my truck. it runs AWSOME now. no more problems.

Motorcraft plugs where about $12 each and the boots where about $8 each - do it all.

i cut open all my old boots, one had a minor little spot where it looked like it was arc-ing. anyhow make sure you use di-electric on the coild end and the plug end.

My truck is fixxed

 

You payed $12 per plug?!!?!?

 

If you are suspecting a restricted exhaust then use a vacuum guage. Drive the truck around to get it warmed up. Hook guage up to it and increase revs to 2k rpm. Your vacuum should return above 16 inches mg. If it doesn't then you have a plugged up exhaust system.(per ford)