CCV Breather hose catch can

What is the port on the front of the valve cover connected to? What I understood the routing to be is a hose coming from just behind the air filter to provide filtered air (not vacuum) to the front port. Then the rear port was connected to the intake manifold to provide the vacuum. My understanding was that the catch can was supposed to go in the middle of that line. I don't see anything in your pictures that actually connects to a vacuum.
 
Well the catch can has made the problem worse. Now its blowing oil out all over the place. Could I have something hooked up wrong with the can? It acts like the breather is no longer breathing.
Make sure that there are no restrictions in the fittings on the can. If there is or is the fittings are just to small it is pressurizing your crank case. Also, unless they changed something in that can design since the last time I looked at one it is a poor design. Fully open inside, so your vapors will just go from one port to the other with out coalescing much. That crappy blue hose is also known to collapse/kink when it gets hot.

What is the port on the front of the valve cover connected to? What I understood the routing to be is a hose coming from just behind the air filter to provide filtered air (not vacuum) to the front port.
Your method is correct, but his engine has so much blow but that it is overcoming the vacuum on the rear tube w/ the orifice. A high mileage engine could do the same thing. When that happend a lot of vapors are pushed out the front tube.
 
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