The Stovebolt Site Forums The Shop Area Engine Shop PCV valve

Jerry makes a very good point. The extension tube I mentioned (and made) takes the PCV valve up to a point level with the top of the valve cover...which is where it ought to be in my experience. I tried the valve at a lower point and what it did was suck up just enough oil vapor to foul the PCV valve and keep it from working correctly. What I ended up doing was to stick a grommet (available at O'Reilly's) in the hole where the downdraft tube connected and brought a copper tube extension up from there. A picture will help clarify this.