2006 f150 4.6 2 valve 2wd. I have a vacuum line that I don’t know where it connects to, thought some one could give me a hand or reference to what it connects to. Picture shows the blue tape wrapped around it. It has vacuum on on it just no idea where it connects.
see pics

Blue tape around line


Closer view

 

Could be the one that would connect to the 4wd solenoid if you had 4x4.
My truck is a 5.4 so it looks a little different in that area though so I'm not sure.

 

Appreciate the response. I have a 2wd so it should be capped off if it’s for 4wd. There’s vacuum coming off of it though. With it taped off, acceleration seem normal, although I just fillled the tank halfway, after using up all the old gas my brother had in there. I don’t know if it’s related to the egr valve?