pull the PCV valve from the valve cover & hold your finger near the suction hole. it should grab your finger to it with the vacuum suction
the opposite side valve cover should have a breather or tube to the air cleaner housing for fresh air intake
the PCV valve draws fresh air from the opposite side valve cover, through the crankcase pulling out any blow-by smoke with it
adding an additional breather vent to the fresh air side cover may help a little
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