matacaibo
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- North East Lincs
I thought it was the process in which it separates the air & oil, returning the oil back into the engine whilst allowing the crank case to breathe?
Yes it is but its unlikely to be needed in a healthy engine because there is very little flow to make a cyclone, what worries me is dust returning through the open cyclone cage into the engine, I must admit I don't know if the seperator is upstream or downstream of the positive backpressure valve.
On a very dry dusty trip to the Pyrenees a couple of years ago I checked the foam seperator before we left home then again half way through the trip & at the end of the trip, on those occasions it was almost completely blocked with a mixture of dust & oil so some dust does get back as far as this seperator somehow....or do I have a problem with my PCV valve ?