air hissing noise from brake area

Discussion in 'Engine' started by clk320-, Nov 1, 2016.

  1. clk320-

    clk320- Member

    Messages:
    41
    Joined:
    Oct 26, 2016
    Car:
    CLK320 2003
    Hi there,

    I have a clk 2003 and there is an air hissing noise near the pedal area occasionally when driving. When I press down the brake pedal the noise stops. Anyone have any idea what this is?
    Cheers
     
  2. 4life211

    4life211 Active Member

    Messages:
    293
    Joined:
    Jul 14, 2015
    Car:
    mercedes 211
    maybe it is not air hissing. how are your brakes does they work fine???
     
  3. W210Virgin

    W210Virgin Active Member

    Messages:
    255
    Joined:
    Feb 25, 2014
    Location:
    Norn Iron
    Car:
    2002 S210 Avantgarde 320CDi in silver. Black leather interior
    Check for air (vacuum) leak at your servo. Simple to see/ check. Should have reduced braking though if there's any significant leakage.

    Sent from my SM-G935F using Tapatalk
     
  4. OP
    OP
    clk320-

    clk320- Member

    Messages:
    41
    Joined:
    Oct 26, 2016
    Car:
    CLK320 2003
    The brakes seem to work well, although first clk so not sure how good they should be


    Sent from my iPhone using Tapatalk
     
  5. OP
    OP
    clk320-

    clk320- Member

    Messages:
    41
    Joined:
    Oct 26, 2016
    Car:
    CLK320 2003
    I don't know if I need a new servo but I've been told they cost around £700?


    Sent from my iPhone using Tapatalk
     
  6. W210Virgin

    W210Virgin Active Member

    Messages:
    255
    Joined:
    Feb 25, 2014
    Location:
    Norn Iron
    Car:
    2002 S210 Avantgarde 320CDi in silver. Black leather interior
    Loads available in scrapper yards. Speak to a good indy. Not a big job to swap, technically. More a PITA.

    Sent from my SM-G935F using Tapatalk
     

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