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  1. #1
    Join Date
    Jun 2014
    Location
    Canberra, Australia
    Posts
    278

    Default turbo vacuum flow direction

    Hi all
    I'm wondering about the flow direction of the vacuum hose from the center of the inlet manifold (not the small one from the side of the manifold). This hose connects to a check valve and I don't know which direction it should go! I think I might got the wrong flow direction setup which has arrows pointing away from the spot where it connects to the manifold.
    I've done some searches but nothing seems to be clear about it! I haven't been able to find the turbo vacuum diagram for XC70 so I can't tell if my setup is right or wrong!
    Cheers
    Khoa
    Click image for larger version. 

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  2. #2
    Join Date
    Feb 2013
    Location
    Boston, MA
    Posts
    1,199

    Default

    I think the valve should be open when intake manifold has a vacuum.
    2002 V70 (sold)
    2005 XC70 (Telos Road took it. Did a chassis swap)
    2016 XC60 (sold, P.O.S.)

  3. #3
    Join Date
    Jun 2014
    Location
    Canberra, Australia
    Posts
    278

    Default

    Quote Originally Posted by vtl View Post
    I think the valve should be open when intake manifold has a vacuum.
    Sorry I don't really get what you meant here! Can you explain abit more?
    When you say "intake manifold has a vacuum", do you mean that its sucking in the air or the other way around? if the manifold sucks the air in through that hose then i've got the wrong setup I think!

  4. #4
    Join Date
    Dec 2012
    Location
    Toronto, Ontario, Canada.
    Posts
    1,063

    Default

    Arrow pointing towards the manifold.
    2005 XC70 Crystal Green | Hilton | 16T | Bad Swede | 130k miles

  5. #5
    Join Date
    Jun 2014
    Location
    Canberra, Australia
    Posts
    278

    Default

    Quote Originally Posted by Antherzoll View Post
    Arrow pointing towards the manifold.
    Thanks so much for the confirmation! I got it right the first time but changed the direction after I put the manifold back thinking it was wrong!

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