PCV usually goes to the carb base or to the carb spacer between it and the intake manifold, if so equipped. Just for the heck of it, plug the hose and see what happens. The system is designed to work with the air from the PCV but the result might indicate a vacuum leak elsewhere. It won't hurt the engine.
Normally, in a closed system, there is a hose from the air filter housing to a valve cover breather/oil separator. Under vacuum induced by the engine intake process, fresh air is drawn into the engine and crankcase fumes are drawn out through the PCV valve and into the intake manifold, where they join the air/fuel mixture and are burned in the engine.
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