Would anyone know if there is a vacuum line diagram for the v 12 e type.

Submitted by NE48-08672J on Thu, 02/21/2013 - 17:00

Michael, on the left side intake manifold , at the end near the firewall, there is a vacuum line that goes to the canister. There is a spigot above that line on my manifold that has no hose attached. My question is, what is that spigot and where does it go?