Second AAV on SC Engine.............
 

Is the supplemental AAV supposed to have vacuum on it? Both of the AAV units on my engine have the nipples for the vacuum lines but only the one closest to the rear of the car actually has a vacuum line attached. I currently have the engine out of the car so now is the time to replumb the vacuum lines if needed. If the secondary AAV is supposed to have vacuum, which port does it pull from?

Thanks!