1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Could This Be My Boost Leak ?

Discussion in 'A3/S3 Forum (8L Chassis)' started by A3 T, Mar 2, 2012.

  1. A3 T
    Offline

    A3 T Lord Of The Rings

    Joined:
    Feb 23, 2011
    Messages:
    1,026
    Likes Received:
    11
    [Mar 2, 2012]
    I've been thinking i could have a boost leak for a while now and today i noticed the jubilee clip has cut into this hose (marked in red):

    [​IMG]



    Could this be a boost leak or does the one way valve stop that?

    Also can i just replace it with some silicone vac hose?
    #1
  2. jay1601
    Online

    jay1601 Well-Known Member

    Joined:
    Jun 25, 2010
    Messages:
    1,271
    Likes Received:
    35
    [Mar 2, 2012]
    will cause a boost leak.

    replace as its the vacuum pipe for your brake servo
    #2
  3. A3 T
    Offline

    A3 T Lord Of The Rings

    Joined:
    Feb 23, 2011
    Messages:
    1,026
    Likes Received:
    11
    [Mar 2, 2012]



    I thought so....lol I wasn't sure with it being for the brakes that it could cause a boost leak.

    Can i just use some silicone vac hose?
    #3
  4. A3 T
    Offline

    A3 T Lord Of The Rings

    Joined:
    Feb 23, 2011
    Messages:
    1,026
    Likes Received:
    11
    [Mar 3, 2012]
    #4
  5. Andy123
    Offline

    Andy123 Member

    Joined:
    Jan 3, 2009
    Messages:
    260
    Likes Received:
    2
    [Mar 3, 2012]
    Use some brake servo hose so that it won't collapse and cause your brakes to fail. Just search on ebay or alike for 'brake servo hose' and find the correct size. Can you not just cut the damaged part of the existing hose off and then fit it back on if there is enough length on it?
    #5
  6. A3 T
    Offline

    A3 T Lord Of The Rings

    Joined:
    Feb 23, 2011
    Messages:
    1,026
    Likes Received:
    11
    [Mar 3, 2012]


    Good thinking batman, ill give that a go :thumbsup:


    The reason i wanted to change the hose is because i was going to change all of the hose so i wouldn't need to keep that bolt in there as a plug....lol


    Do you know what size hose ill need?
    #6
  7. Andy123
    Offline

    Andy123 Member

    Joined:
    Jan 3, 2009
    Messages:
    260
    Likes Received:
    2
    [Mar 3, 2012]
    Not sure mate- just measure the id of the original hose. I'd just cut the original damaged part off and join it back up if you can, saves time and money.
    #7
  8. A3 T
    Offline

    A3 T Lord Of The Rings

    Joined:
    Feb 23, 2011
    Messages:
    1,026
    Likes Received:
    11
    [Mar 3, 2012]


    I'm going to give that a go mate but i would still like to get rid of that Y hose to neaten things up ;)
    #8
  9. A3 T
    Offline

    A3 T Lord Of The Rings

    Joined:
    Feb 23, 2011
    Messages:
    1,026
    Likes Received:
    11
    [Mar 9, 2012]
    I tried cutting the hose down today but the plastic tube from the one way valve stopped me from being able to put the hose back on :(

    So i found a bit of hose i had laying around ad it was a perfect fit:

    [​IMG]



    The hose i had is on the right....lol


    Do you think this will be ok as the original hose doesn't even look like servo hose.
    #9
  10. Prawn
    Offline

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,233
    Likes Received:
    1,853
    [Mar 10, 2012]
    OVer a very short length it'll be fine. It's over longer lengths where you need to use proper vacuum tubing as normal hoses can collapse under vacuum
    #10
  11. Alais DJA
    Offline

    Alais DJA Member

    Joined:
    Feb 1, 2012
    Messages:
    559
    Likes Received:
    49
    [Mar 10, 2012]
    Is there a picture of the hoses you need to ckeck....i've gotta do mine at some point cos i refuse to believe that whistling is the carbonio
    #11
  12. jay1601
    Online

    jay1601 Well-Known Member

    Joined:
    Jun 25, 2010
    Messages:
    1,271
    Likes Received:
    35
    [Mar 10, 2012]
    your soon find out if it doesn't hold.

    as when i has my car mapped it caused the pipe to pop of the manifold (one your having problems with) as it popped the old clips off. which caused the brake pedal to go hard (due to no vacuum) and stalled the engine.
    #12
  13. A3 T
    Offline

    A3 T Lord Of The Rings

    Joined:
    Feb 23, 2011
    Messages:
    1,026
    Likes Received:
    11
    [Mar 10, 2012]
    Thanks guys ;)

    I couldn't find anywhere that sells 13mm servo hose so I've had to order it online.


    This one should hold out until it shows up (i hope).
    #13

Share This Page