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crankcase vent valve

  1. General E46 Forum
    Took my 2004 325xi (80K miles) (first-owner) to trusty mechanic for a thumping noise in the front and to identify leaks under the car (started after I put two O-rings when replacing oil filter :shhh:). I did wait for a full week for the residual oil to finish dripping but finally gave in...
  2. General E46 Forum
    I'm in the process of perhaps installing an after market oil separator. I say perhaps as I only installed an OEM one about 15k miles ago. But I don't want that oil vapour crap going back into my intake tract so for now I simply did the following: I removed the oil vapour distribution piece...
  3. DIY: Do It Yourself
    My 2004 330i ZHP with about 75,000mi encountered some difficulties this winter when it was cold and snowy. Symptoms were a rough idle, hesitation, and reduced power. I don't have a long commute and it was parked outside, so I suspect a CCV issue. The car did pop a SES light with codes P0171...
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