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What's this bit do?!

Discussion in 'A4/S4 forum(B5 Chassis)' started by niggtv, Apr 29, 2006.

  1. niggtv

    niggtv Member

    Mar 7, 2006
    Likes Received:
    Just replaced the N75J valve on my 1.8T. To get to it I had to temprarily remove a black circular part (approx 5cm diameter)... a rubber hose from the middle of it joined the air intake, and another hose joined onto a metal pipe (which looked like a breather pipe), fitted along the side of the cylinder head.

    What is it?! /ubbthreads/images/graemlins/idea.gif

    When I removed it some oil poured out - is this to be expected? Also, one of the hose clips was very loose.

    All back together now, and seems to be pulling more smoothly.
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  3. mattpanton

    mattpanton Member

    Sep 26, 2005
    Likes Received:
    Sounds like something to do with the PCV (positive crankcase ventilation) to me, they normally have a habit of collecting a little oil, nothing to worry about I don't think.


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