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HybridZ

LC9 5.3 v8 any good i read oil issues


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Ok, thanks, looked at photo in link. So SunnyZ, your opinion is that the PCV system pulls too much vacuum and sucks oil into the intake? So it is best to just vent it to atmosphere and cap the PCV port. Have I got that right?

 

Quite the opposite really. Too much pressure, and just blows oil. Its a push/ pull system also, and needs an oil separation at some point. 

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Two words: Catch Can. Either that or bad valve seals.  WIth the mileage on your engine, I'd say you're just pushing oil back through the intake (stock PCV system is a joke).

 

I used to have TONS of oil in my intake. Since I switched to the CC, not a drop. Couldn't be happier.

Most likely Intake Valve Seals when burning oil lifting off the throttle generate Very High vacuum through leaky valve seals.

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