Vacuum hose leak and Engine Compartment

[Comanche]

My Check Engine light for my 2001 BMW X5 came on so I hooked up a Pocket Scan to find out what was causing the issue. The scanner listed two fault codes, PO171 System Too Lean (bank 1) & PO174 System Too Lean ( Bank 2). I was checking for vacuum leaks and took off the engine cover and noticed two vent hoses collapsed and cracked (see part #5 in the diagram below). I was able to replace the one closest to the front of the vehicle, but I can not reach the one in the rear. I found some information from a thread on X5World that mentioned you can access them by removing the hood seal and cowling along the back of the engine. If anyone has a diagram, directions, pictures or web site that show how to remove this I would greatly appreciate it. The X5 runs great about 97% of the time, however occasionally when I start the vehicle it will ideal ruff for about 10 seconds and then it will be fine. If I reset the codes the check engine light comes on somewhere between 50miles and 120 miles.

If anyone has any other recommendations that might resolve my problem I would be very grateful.

Comanche