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Hissing noise from brake pedal


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Hey all,


Today while out and about my brake pedal went hard. I was able to stop still. I carried on as it was on a roundabout and when I was off the roundabout the brake pedal seemed to go down again. However the brakes just don't feel right.


Checking all the vacuum pipes I could see nothing but came across this at the top of the brake pedal where it meets the firewall. Could this be causing the hissing and brakes not working as they should be?


It looks like a split grommet to me




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take the vacuum pipe off at the servo put you finger over the pipe with the engine running it should firmly suck your finger into it , If this is ok then you more than likely have a burst diapharm inside your servo , I have seen the pipes burst and the servos fail on these before usually caused by oil contamination  

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I have a hissing, air releasing type sound on my brake pedal however brakes seem fine. Assuming that its normal as they dont feel different?

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