pcv making idle rough?

i changed out the intake manifold and the carb and pvc and now my car runs like..$#*[email protected] kept messing with it and took the vacuum hose off the pcv and it runs great????what is going on


the pcv valve is prob bad and its just sucking air outta the valve cover. creating a vacuum leak. does the idle speed up when you hook up the valve? does is slow down when you plug the port on the carb?