anthony123400 Posted October 14, 2017 Share Posted October 14, 2017 hi ya really need help with this problem my focus 1.6 is making a loud hissing noise on the drivers side under the bonnet and my brakes have become really spongy with less performance has anyone got any idea what it could be any help would be appreciated because i haven't got clue really need some help and advice thankyou Quote Link to comment Share on other sites More sharing options...
kingsblue Posted October 14, 2017 Share Posted October 14, 2017 Sounds like the brake servo has a problem or the pipe going to it. Quote Link to comment Share on other sites More sharing options...
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