I've got a vacuum leak somewhere in my system but I can't find a good diagram to check for the possible leaks.

I assume it's a vacuum leak and that's what it sounds like. It's really audible and I have all the 02 error codes. Cylinders running lean and the like. It runs really rough at idle and will sometimes stall when idling. If you think I'm wrong with my diagnosis I'm all ears for solutions but otherwise I'm just looking for a diagram of the intake system.

 

Have you tried spraying carb cleaner and listening for an RPM change?
PCV lines are a common area of vacuum leaks.

 

So i got around to running some test with some starting fluid (didn't have any carb cleaner cans that worked) and found one hose that caused some reaction. It's a hose that comes off the backside of my engine. It seems to share a casing with a diaphragm that is on top of my engine I'm going to try to figure out what it is and replace it.

I made an album with some pictures