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Losing Brake Fluid - Possible Scenarios

Discussion in 'A3/S3 Forum (8L Chassis)' started by Alais DJA, Feb 1, 2013.

  1. Alais DJA
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    Alais DJA Member

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    [Feb 1, 2013]
    Morning all.

    Starting to lose Brake fluid over a few days, and clutch pedal keeps sticking every now and then on depression. No noticible leaks, however the rear pads have gone to the metal ( and are getting replaced Sat )

    Any ideas.
    #1
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Feb 1, 2013]
    Clutch master cylinder, slave cylinder or the pipe going into the slave cylinder are likely culprits...

    <tuffty/>
    #2
  4. Alais DJA
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    Alais DJA Member

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    [Feb 1, 2013]
    I suspected as much - each part wont cost me more than £20.

    On another side note though - do you need to remove the steering wheel to replace the washer stalk>? And stickies about?
    #3
  5. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Feb 1, 2013]
    Yes you will... don't know of any on here that I remember but I would disconnect the battery and leave it 20mins before attempting to remove the airbag/steering wheel... there should be steering wheel removal guides on places like VWVortex, UKmkIV's etc...

    Or look for the guide to fit cruise control as the PDF from VW Teeside has this in it...

    <tuffty/>
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  6. Alais DJA
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    Alais DJA Member

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    [Feb 12, 2013]
    diagnosed the problem to a small silver unit with a pipe in each end sits above the near side wishbone ( and where the fluid is collecting )behind the battery suspended by two metal pipes each end.
    can anyone confirm what the name of this unit is...

    so far i've been told pressure release valve / non return valve / dampner valve

    any help as always greatly appreciated
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  7. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Feb 12, 2013]
    Got any pics?

    <tuffty/>
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  8. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Feb 12, 2013]
    ...actually I have an idea of the bit you mean... fitted to the bulkhead?

    <tuffty/>
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  9. Alais DJA
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    Alais DJA Member

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    [Feb 13, 2013]
    yeah, small silver unit size of a golfball.
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  10. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Feb 13, 2013]
    Dealer only part as far as I know... dunno the PN or what its called off hand... have heard of these 'leaking' before... have you tried tweaking the unions at all and give them a clean with brake cleaner after to see if its still leaking?

    <tuffty/>
    #9
  11. s3dave
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    s3dave TFSI Hybrid Supporter

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    [Feb 13, 2013]
    It is a reducer damper valve, see Superkarl his went..
    #10
  12. Alais DJA
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    Alais DJA Member

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    [Feb 13, 2013]
    The feelers are out at the moment at my garages i manage to find me one now, im going to clean up and tighten it up tonight see if it leaks any more under load. will keep you updates
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