Quote:
Originally Posted by bradmd
Trying to understand this myself on an 08 C4S. Installed new AOS primary last yr, seemed to get better but recurred. Oil in intake again. Will replace secondarys too this time I guess.
I did find a loose AOS hose where it returns to the intake. Low vacuum from a leak like that wouldnt cause the oil to be sucked into the intake, would it?
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No, but a cheap after market AOS rather than the factory unit will fail prematurely and cause you to have to do it all over again............