By way of bumping my long-winded post, just noticed on Vadis that there is no PCV valve in the parts catalog for this model, just what's called an oil trap which connects to the crankcase ventilation hose. Does this mean that the crankcase is open to manifold air at all times, or is there still supposed to be a check valve in the oil trap?
I know I could just take it off and see what's going on, but removing the intake manifold to get at it seems like a bit of an ordeal.
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