ok i've been looking at this hose that is plugged up and tied to other hoses up by my battery since i bought my truck, it is a black hose plugged up that runs under the track somewhere, i lose it, but i think it runs into the converter i think the name is, when it comes to the non engine stuff you can call me an idiot i promise i won't get mad in fact i'll agree with you, so i have a couple of pics if anyone can tell me that would be cool because maybe it is supposed to just be plugged and put somewhere or maybe the person i bought it from is worse than i am lol so can you help me out?

 

It looks like a Vent tube. ( Differential Vent tube. )

 

Then do u think it should be open? If it's a vent or still needs the vacuum?
Thanks a lot though that kind of makes sense

 

Diff vent tube. That white piece is a one way check valve. Lets fluid gases out, keeps crap out.

 

Awesome man thank you soo much I appreciate it