Ok.. it's not the BBV, because first ...we don't have one, secondly that middle port goes to the vacuum canister. It heads below the fuse box, then heads across the front of the car to the driverside fender where the canister is located.
You need that vacuum manifold (what it's called). Til you get it, plug that hole.
On the cammed sound. Please recheck your plug wires, two are on the wrong cylinders. Don't ask how many times I've done it, to know what to check..just laugh and go check yours. It's an easy fix.
