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Hey guys, This is my first post so and I feel a bit awkward using it to ask a question but.. I've recently bought my first GTR R33 and things seems great, the drive-ability etc but there is something that is REALLY confusing me. How on earth is my PCV system setup? I've drawn a picture below: - As you can see, the catch can/breather is plumbed into the oil dip stick and the PCV valve that sits in the centre on the air intake side no longer goes back into the intake but goes directly to the rocker cover breathers and then out to a venturi port. The venturi port creates the vacuum that sucks on the tubing that routes to the PCV valve however upon inspecting, any kind of hard suction on the PCV valve from the exhaust side causes it to shut whereas any suction from the other side caues it to open. How is this working to allow the crankcase gases to escape? I'm noticing a problem because the oil is coming out of the dip stick feed which implies that the ventilation is not working properly.
