My truck is a 94 22re 5sdp 4wd. I just had the valves adjusted and now it sounds like diesel. Anyways I was looking at the enigne and noticed that this litle black thing attached to the intake manifold(SEE PICS) is missing a hose. I can feel the vacuum suction when I put my finger on it. I cannot find a loose hose or anything and have no idea how to search the forums for it. Could somebody tell me where this connects to?
The one picture has an overview picture of it and then the other one has my finger touching the black part.
The one picture has an overview picture of it and then the other one has my finger touching the black part.

