Fuel Injection Questions

[pickupguy]

While reinstalling the Fuel Injection I noticed 2 vacuum lines not hooked up. I looked in my Hanes and it showed nothing. What goes on these? Thanks Kerry

[Scott R]

The one on the left is the drain for the CIS airbox, for the most part nothing goes there, I have seen a few with a drain hose that goes down and out the back. The one on the right is the cold start valve block, you should have a very large hose/metal line that goes to the AAR and AAV loop, I doubt the car will even start with that missing.

The silver looking metal line in this picture is the AAV/ARR/Decel loop.

[pickupguy]

Wellllll that is verrrrrrrrrry interesting. Mine has none of that stuff and it did start and run pretty well before I pulled it down to reseal some leaks. Looks like PO removed all the AAV stuff

Thanks
Kerry

[Scott R]

Originally posted by pickupguy
Wellllll that is verrrrrrrrrry interesting. Mine has none of that stuff and it did start and run pretty well before I pulled it down to reseal some leaks. Looks like PO removed all the AAV stuff

Thanks
Kerry

I suppose it would be posible to block off the port at the CSV and run the system, you would however need to live in a very warm climate since you no longer have the AAR asist on startup.

[azasadny]

Kerry,

On my '74 911 with CIS, the CSV plug is a "blank" and is not used at all.

[Scott R]

Originally posted by azasadny
Kerry,

On my '74 911 with CIS, the CSV plug is a "blank" and is not used at all.

Then I take that back, do you guys have an AAV and an AAR? Is it just plumbed in a different matter?

[azasadny]

Scott,

My '74 does not have an AAV or AAR. I have a WUR, CSV, all of the other "usual suspects" in the CIS, but my '74 does not have these two components and I don't believe they came with the '74 CIS but the CIS was modified every year and more and more components added/ modified.