I have a 1985 190e 2.3 automatic, there is blowby present at the oil filler cap, but the engine does not use much oil, approx .5 liter in 3000km. I suspect a plug pcv system but can't find any diagrams wrt to how the system is setup. Could some one tell me if the system is prone to plugging, and if so where the offending part is located. I've removed the aircleaner. The hose out of the valve cover and the restrictor valve seem okay.
Thanks in advance.
ps websites with discription or diagrams are good to.