I need help with understanding where some vacuum lines go on my 1999 Porsche 996c4. In the attached photos I have indicated the numbers of items that I need help with and some that I think I understand. I have looked at all the YouTube items that I could find, diagrams from suppliers and the manuals without much luck.

1. Not used
2. Connect where?
3. Top of AOS goes to T near coolant container
4. Goes to the Intake Manifold
5. Connect where?
6. Connect where?
7. Connect where
8. Goes to the Intake Manifold

 

Having the same problem but 1/10 of yours...I only need to know where to connect one hose. So I'll wait with you on this hoping I'd get some help as well with my 1 single hose....

 

There are three lines. One goes to the back side of the intake manifold, another to a vacuum source and a third that goes to the white piece that goes to the front of the intake manifold. At least that is what people have told me.

Good Luck

 

Thanks Bill99.

Did some more research and found this YT Video. It basically shows how to dismantle the whole 996 engine so it may help you figure out where those hoses go...


My question / issue was answered in Step #9 5:20 sec. in the video.