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VERY strange thing going on with my catch can!

Discussion in 'A3/S3 Forum (8L Chassis)' started by S3 Paul, Feb 15, 2013.

  1. S3 Paul
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    S3 Paul Moderator Moderator

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    Erm... I posted recently about the lack of oil in my catch can...
    well while jump starting a car today I decided to feel how much pressure was coming out of the outlet...
    very little and almost a vacuume , this was at idle... Wrong?
    my can is simple in place of the top hat and pipe into the tip.
    i have fitted a bung to the tip.
    Is something wrong?.
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  2. s3dave
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    s3dave TFSI Hybrid

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    Nope perfectly normal,, at idle your engine is in hg ..vacuum
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  3. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    As dave says mate thats right. When did you have your engine rebuilt?
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