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Crankcase breather hose

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by prs999, Nov 30, 2011.

  1. prs999

    prs999 New Member

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    Hi,

    I have just had my MAF sensor out with the thought of cleaning/replacing it and when I looked down the air hose going to the turbo I can see an oily residue/build-up in the pipe coming from where the crankcase breather hose enters it. Is this normal? should I be worried? Also the is a small amount of oily residue on top of the turbo and a large build-up on the pipe underneath which I think is the 'air intake hose to the charge cooler' as the manual states, again should I be worried and if so what could be causing this?

    Cheers
     

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