Ive done some searching, but IM just confusing myself more. Im a pretty good DIYer, but Im not familiar with this situation. Ive read everything from vac leaks to new cops. where is the best place to start? Any help will be greatly appreciated
Oh ya (thanks torkum) its a 99 f150 5.4

 

Next time let us know what you have. Start with checking the PCV valve elbow for tears [on both ends], this is one of the most common for Fords.

 

Cool, Ill start there. The truck is stumbling pretty bad. I can get it to smooth out sometimes, at certain speeds when there isnt much load on the motor. but start climbing a grade in the road and it comes right back.

 

fix the missing prob first - replacr #4 COP - fix the heater core hoses if leaking

 

Agreed.