Quote:
Originally Posted by Brian Carlton
Why would the exhaust gases build up under the valve cover? You have a hose from the valve cover to atmosphere. The gases are pushed out of the engine via pressure in the crankcase. They don't need the slight vacuum level in the intake to generate flow.
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That makes sense, but there IS less pressure under the oil cap since I reseated that tube and got the filter remounted (and there was more when the housing broke loose)