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  1. E46 General
    Hi, all. I've been tracking down an oil leak which I think is coming a lower CCV hose. (Right hand side of hose number 4 on this diagram.) Can any of you experts confirm I'm barking up the right tree? I had planned on installing the cold-weather CCV system before winter, but if it is in fact...
  2. E46 General
    P0171 & P0174 Diagnostic help here you go 1. Check additive and multiplicative values 2. Perform smoke test of intake using inert smoke 3. Check Crankcase pressure with Manometer 4. Use a VE calc(volumetric efficiency calc) I posted how to do this and the file a while ago don't remember when...
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