Okay, I have replaced the rear "breather tube" on the valve cover on my 2.5L 97 wrangler. When I bought the jeep, it had a cold air intake on it, that the fella put on it before he sold it to me. Well, about 5 months into owning it, I noticed that it was starting to run kinda weird, so I started investigating. Ended up finding oil in the Cold air intake coming from the hose that ran from the breather tube at the rear of the valve cover. So I unhooked the hose from the breather tube and just let it go off the side of the engine, I dont have alot of oil coming out but some is being pushed out. At first I thought the Cold Air Intake was pulling air so hard that it was pulling oil through, but there is still some oil coming out. I have taken the valve cover off and tried cleaning everything out and spraying cleaner into the front "valve looking thing" at the valve cover that has a hose running into the intake under the throttle body. I am staring to believe I need to replace that piece, but I have NO IDEA what it is even called. When I cleaned it out, it was a little clogged, so I might be able to clean it a little more. Anyone have ANY SUGGESTIONS, I know this cant only be a problem I am having! I really do appreciate everything you guys have already helped me with!