Focus66 Posted October 13, 2013 Share Posted October 13, 2013 On my 06 plate Focus 4 occasions recently I have braked and pedal is stiff but brakes are very weak, and car just glides on, no "bite" from the brakes at all. Totally intermittent problem with no warning, car then brakes perfect again until.........? Anybody else had the same problem ? My thought is either brake servo or master cylinder or ?? Quote Link to comment Share on other sites More sharing options...
STEADS Posted October 13, 2013 Share Posted October 13, 2013 Sounds like a possible vacuum problem or like you say master cylinder seals gone causing a hydraulic lock on the so no or little fluid going to the brakes needs looking at urgently I'd say Quote Link to comment Share on other sites More sharing options...
mjt Posted October 13, 2013 Share Posted October 13, 2013 Definitely sounds like a vacuum problem. What engine? Petrols use vacuum from the manifold, diesels have a pump as there is insufficient manifold vacuum. If the latter it could be a pump problem, sticking pushrod or valves. I agree with Neil this is dangerous and needs investigating ASAP if not sooner. Quote Link to comment Share on other sites More sharing options...
Focus66 Posted October 14, 2013 Author Share Posted October 14, 2013 Car booked in the garage tomorrow, vacumn pump, thanks for the help and advice. Quote Link to comment Share on other sites More sharing options...
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