Help! vacuum leak, need an s52 intake vacuum diagram

[undergroundhead]

So I'm tracing a vacuum leak and cant find a clear diagram for the vacuum lines on the s52 manifold. Bently has nothing clear, nor does real OEM. I have been searching for hours to no avail....can anybody help?

I hooked a smoke machine up to the car and smoke is puffing out of a very small diameter nipple right beside where the ICV goes into the intake manifold. No hose is attached and I cant seem to find one that should go there...maybe its unused and needs a vacuum cap on it? If anybody has a clear diagram that would be great, thanks guys.

here is the only relevant thread I could find, its number 5 or 6 in his drawing and there seems to be conflicting opinions in the thread as to what should be attached to these nipples
http://forums.bimmerforums.com/forum/showthread.php?t=1504036&highlight=vacuum+diagram

[mbelden]

You know where your egr valve is? If so, theres a line that goes from the egr to a small nipple just behind the throttle body, into the intake manifold. Big pita with the manifold on. I went to a local junkyard and figured out the routing on another car, then did mine...good luck!