Not really normal.
Get a new PCV valve, OEM is prefferable. Then test the PCV system. You can make a PCV oil seperator to help.
Check for excessive blowby by plugging the back PCV fresh air hose (both ends) and the front hose intake side. See if blowby comes out of the front valve cover.
Check compression.
If necessary pull the valve covers and check/replace the oil seals on the valves.
