brake pressure

[mikiep1986]

 noticed this yesturday morning drove down the road and put the brakes on . . well the pedal went down the bottom then the brakes worked . . well pumped the pedal and all was fine but kept my foot on the pedal and it slowly went to the floor and lost all pressure . . .  :'(

 ive checked the vacuum pipe cant see and splits and submerged it in water cant see any air leaking out . . .what else caould be causig my brakes to do this . . is it seals in the servo or is the vacuum pump shagged . . . :roll:

 cheers mike

[wizard]

Sounds like the seals in the master cylinder are shot.
Have a look at the colour of your brake fluid, if its black thats a tell tail sign of the seals wearing.

wizard :twisted:

[mikiep1986]

 well update is the passanger side front caliper was leaking fluid so i changed that just gota bleed the brakes . . . now the fluid that came out wasnt black was still normal clearish colour . . .

 just hopeing that once the brakes are bled and the caliper is pressurised it will work . .

[mikiep1986]

 bled the caliper and still no pressure  :'(. . is fine if u pump it but then it sinks back to the floor also wen pushing the pedal has like 2 stages . . its goes down then reaches a point and goes down even more like its pushing a blockage through . .  is this just air in the system or is it the seals in the master cylinder  :roll:

[Range Rover Blues]

Sounds llike you have a leak, either the master cylinder or another wheel cylinder.  Inside the master there is 2 sets of seals, dual circuit.  It will "work" if all but the outer one are goosed, for what they cost though don't bother rebuilding it.

[mikiep1986]

so its better to just get a new master cylinder then and see if that works saves taking it apart and trying to repair it ???