I have a 03 F150 4x4 5.4l;
I have been experiencing problems when the weather is moist and/or wet. When i accelerate it hesitates until I accelerate harder. It is almost like there is a crack in a line that gets moisture in it. After the wet weather, it takes a couple days for it to dry out and then it runs just fine.

Any comments would be greatly appreciated.

Thank you

 

Welcome to the forum

Sounds like moisture is getting into the sparkplug pockets. I would replace all 8 coil boots and be sure to use plenty of dielectric grease.

 

Thank you for the advice!!

Greatly Appreciated!!

 

that sounds like thats your problem your plug wires a way that you can check that is to get a water spray bottle on mist, start your truck up and spray over the top of the wires it will look like the fourth of july its pretty neat if you ask me but that definently

 

His engine doesn't have any spark plug wires.....

 

sorry neverr worked on fords very much didnt know that i guess you learn somethin new everyday

 

Do a search on COP coil over plug, sounds like a good place to start.