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Message: <blockquote data-quote="Tico007" data-source="post: 27018" data-attributes="member: 7026"><p>That pressure out of the oil filler cap is still there even with the orifice cleaned out. It’s  an inefficient design that causes problems whether it’s plugged or not. Only way to know for sure is open up the intake manifold and check. It’s not a big deal on this engine. Pretty easy. You can also drill a hole from the top for access and poke at it. Or you can do a mod using a real PCV valve that’s what I’m doing.</p></blockquote><p></p>