Normal ''Healty'' crank case pressure?
 

Someone in my area got issues with a brand new garrett turbo smoking like shit. Since the old K04 one was replaced because of smoke, it is not easy to say both turbo are bad on the same engine....
i was wondering if we could mesure blow-by of the engine and health of the PCV system with a pressure gage connected to the oil dipstick tube?
I think it could be possible to state this way which of the turbo or blow-by make the smoke ?
I know a leak down test/compression test may tell about engine health but it won't tell about PCV...

Is there anyone that ever tested it because i don't have any refference pressure values of a healty engine VS a worn out engine....? I would assume it need to remain near atmospheric pressure but i'm curious...