You could actually route crankcase fumes up into your air cleaner, but a 216 has the crankcase ventet to the atmosphere at two points: The draft tube, as Drummin points out, and the valve cover has 3 louvers it it. The way it's supposed to work is, the engine draws air in one and lets it out the other. What happens in mine, since the engine is far between overhauls and blows by some, is that it slobbers a bit. And so will you, when you get this old! :/
