A question about the merits of simply venting the PCV to air versus an Oil Catch Can.
From what I can determine the Intake Manifold sucks air from the crankcase, so simply venting via a filter would not work unless there is enough pressure in the crankcase to push the gases/oil out. Even with some pressure in the crankcase it will not be as effective without the suction from the manifold.
So...... - is my understanding correct? And if so.... - could simply venting cause a build up of oil/water in the crankcase? Which I would assume to b e bad.
I'm not a mechanic, and have been putting off the job of removing the intake manifold to inspect/clean the valves for some time but given the findings in this thread and Roberts video I think it's time I did. The car has done 39k miles and I used a GDI valve cleaner through the intake at 29k and 34k miles, it will be interesting to see if this has had any effect at all.
