hissing sound when braking

Brakes, Suspension, Rims and Tires

  1. swisherred

    swisherred Well-Known Member

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    1967 Newport Custom
    When Im parked and depress the brake pedal to put it in gear I hear a hissing sound...like a vac leak or something, but there is no effect on the brakes...varying pressure on the pedal varies the sound. Is my booster going bad? Something else?
     
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  2. stubs300

    stubs300 Senior Member

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    Yep, Do you also get a slightly rough idle when doing that? Then it's time to repair or replace. Good Luck
     
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  3. swisherred

    swisherred Well-Known Member

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    I think I did notice a slight change in the idle....depending on pressure applied
     
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  4. swisherred

    swisherred Well-Known Member

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    Where can i find a rebuild kit for it?
     
  5. odcics2

    odcics2 Active Member

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    Google ??
     
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  6. swisherred

    swisherred Well-Known Member

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    sad thing is I just sold my extra one...
     
  7. jct

    jct Senior Member FCBO Gold Member

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  8. swisherred

    swisherred Well-Known Member

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    I can find replacements but no rebuild kits. Someone has to sell them if they are being rebuilt...
     
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  9. Davea Lux

    Davea Lux Old Man with a Hat FCBO Gold Member

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  10. swisherred

    swisherred Well-Known Member

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    Damn...they want more for a rebuild kit than a remain booster costs...any other sources?
     
  11. stubs300

    stubs300 Senior Member

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  12. Turboomni

    Turboomni Senior Member

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    Check the grommet where the vacuum line runs into the booster.