Hello all, I have a 2000 F-150 4.2 V6 that misfires for a few minutes when it is wet or damp out. I have replaced the Coil Pak, Spark Plugs, and Spark Plug Wires. Could someone maybe help shed some light on fixing this issue? I am not getting a check engine light when this happens, Any suggestions would be appreciated. Thank you so much!

 

I get the same problem dude. I replaced my coils and then about a week later it rained pretty heavily and the problem came right back. Once it dries up a bit my truck runs like new again. I'm not going to replace the coils again, I just deal with it for the time being!

 

Did either of you use die-electric grease when installing the new coil packs? Did you use MotorCraft or an aftermarket COP?

 

^^Dirtbuster, I took mine to a local shop and had them do mine. I honestly do not remember which COP's they used.