Quote:
Originally Posted by ForcedInduction
1: The vacuum pump is continuously pumping air out of the vacuum system and into the crankcase.
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Isn't this only the case on later vacuum pumps? On early pumps, the air feeds into the air cleaner and not the crankcase I think.
It might be interesting to compare different pump systems for amounts of blowby.
Correlated with this, does a vacuum leak produce more blowby because the vacuum pump has to work continuously to keep up??