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Thread: Hissing noise from brake pedal.

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  1. Hissing noise from brake pedal. 
    #1
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    Hi all.

    I've searched on here and google and can't seem to find a definitive answer, although I think I'm close to what it could be.

    Yesterday I purchased a 2008 Audi A3 2.0TDI sportback (140) to use as my new daily - purchased privately.

    Only today I noticed a hissing / air escaping / air ingress sound coming from the foot pedal area. When the brake is pressed (even slightly) the noise stops and then starts again as soon as you lift your foot off of the brake pedal.

    After a bit of reading online I've come to an educated guess that it's either the 'brake booster' that has a vacuum leak or a problem with the servo. Can anyone please shed some light on this?

    Any good VAG specialists to recommend in the Nottinghamshire area would be great too.

    Thanks,

    Dan
     
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  2. Re: Hissing noise from brake pedal. 
    #2
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    Servo leak,brake booster is an americanism both are the same.
    A4 B6,A4B7Quattro,MK4 Golf,MK5Golf gone and well forgotten,MK6Golf.
     
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  3. Re: Hissing noise from brake pedal. 
    #3
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    Thanks. Is there a 'how to' anywhere on here for how to replace it? As I'm guessing a few have had a go themselves.
     
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