Also, when I was being told it was the CCV's, I could always pull the dipstick out a little, and vent the crankcase that way...the smoke would completely disappear. I'm not sure if I was equalizing pressure from the vacuum leak or what? But, every time I pulled the dipstick to vent the crankcase, let it idle for a long time, then rev it up...no smoke. Weird.

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2004 545i