Monkey226

Hey y'all, first post on this forum that I've made, been using this forum to help me with jeeps for awhile now though. But now I find myself needing to post a question since I don't even know what the part is that I'm trying to fix. Before I get to the question I'll fill y'all In on the background of the jeep. It's a 1996 two door, the guy I got it from said that it had a 2001 engine dropped into it. I didn't have proof of this but the engine seemed pretty clean and ran strong so I took his word for it. When I got the jeep it was part way through a auto to manual swap, so I finished that up and now it has a strong 5-speed In her with brand new master/slave, flywheel, and clutch. But once I put that all back together the engine went from running strong to not idling, and dieing unless I stay on the gas. Now we get to the question I have, in the pictures I've posted the first couple is of a connection on my manifold that makes a strong sucking noise and is supposed to have a hose connected to it, but every time I connect the hose the jeep won't stay running unless I stay on the throttle, other wise it just idles down and dies. I traced the hose back to the thing in the next picture which I don't know what that part is, and from there it goes to the last picture which I'm pretty sure is my charcoal canister, but I'm not 100%. Any help with figuring this out would be greatlt appreciated, thanks guys.