Bleeding brakes
Discussion
Got fluid in all four corners of the car, fronts work but the rears dont, just noticed that as I take my foot off the brake pedal, bubbles come up through the fluid resovoir. You can see them coming up from the entry hole in the master cylinder. Is my master cylinder knackered? There are no bubbles when I depress the brake, its only when I release it that they appear.
Did your brakes work ok before you started to do what ever job you did? If yes did you start at the furthermost away caliper from the master cylinder and work to the closest one? I use a easy bleed to do most of the work then finish off with some help will i nip round and bleed them o be sure to be sure. 
Mart D said:
I had the same problem and bled the master cylinder via the inboard bleed nipple.
What a pig of a job to get at and bleed. Done that, got clean fulid out, but still got bubbles coming up into the master cylinder. I am not seeing any fluid leaks in the foot well at all. Is it possible that the fluid is leaking into the servo. I have done a full body off job so its been apart for 2 years so it is possible that the master cylinder seals have gone, although I didn't remove the brake system from the body just disconnected the brake pipes where they connect into the body in the engine bay so I would have thought thatthe seals would have been in fluid all that time.I am assuming that it is a pig of a job to remove the master cylinder and that its probably best to replace rather than replace the seals ?
I had the V8S off the road for a couple of years for rebuild - when I rebuilt it the master cylinder was knacked - bearing in mind we are talking brakes I just bought a new one from brakes international - it was about £80. Couldn't be arsed faffing around with seal kits and all that boloney. I'll post the part number up if you want it - I still have the box in the garage. I do know one application was a diesel fiesta courier van!
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