Coolwhip wrote:I'm suprised Darius didn't say so, or even Karmin.
But from the sounds of it in this thread, the catch cans are being hooked up incorrectly without a proper vaccume source. By adding slip on filters and such.
For instance, think if you have one side of the T going to the intake behind the MAF, and the other side Venting to the atmosphere. So your not really creating a vaccume at all on the valve cover or the can rather just sucking in air after the MAF.
I haven't checked this thread for a while and am getting weary of repeating the same stuff over and over again, but yeah putting an inline filter from your dirty, oily catch can will only foul and plug. Then, it is even worse off than running it without a vacuum source. You can run it with a filter vented to atmosphere, but the filter will eventually clog and you'll be in the same boat. Mine plugged after one summer and started blowing blue smoke out the exhaust because it was causing my crankcase/valve covers to pressurize and cause oil to leak past valve seals and rings.
midnight - that is a good idea to run the valve covers through a couple check valves and directly into the exhaust. I've never even thought about doing it that way but it would definitely work and it wouldn't have to be routed through the engine at all. The only issues are getting materials/valves that can stand up to the high heat of the elbow and emissions if your state even cares.