rallye 1.3s brake pedal go to the ground

[Danrap]

Good evening guys; excuse me for my poor english..
I've parked my fulvia 1300 rallye s a week ago that brakes fine; today i go to take for a trip but the brake pedal go to the floor without resistnace.
Oil in the master cyilinder is always at maximum; no oil leaks on the floor or under the carpet..nothing..

The hose of the brake booster is perfectly dry (i've read sometimes, the brake booster can leak oil from its hose).

I've done a brake bleeder of front calipers but there isn't any air...
What do you think? maybe some rubber in the master cylinder is gone'
It is difficult to remove master cylinder? I would have it serviced by a mechanic without carrying the whole car

Thank you very much

[kev1_3s]

There are only two nuts holding the master cylinder to the pedal box and the couple of brake unions leading from the cylinder to the calipers, 20 mins will have it off.

[Danrap]

Thank you Kev.
My bleed screws of rear calipers are broken. If I remove the pump and then replace with a new one, it will possible to remove air from the circuit?

[kev1_3s]

assuming you're car is series1 you may be able to bleed from the brake bias valve but I'm not entirely sure, however you would be best advised to get the bleed nipples sorted now when you are going to overhaul the brakes.
I got my brake cylinders and master cylinder re sleeved in stainless so shouldn't have any problems going forward.

[Danrap]

Rear nipples are gone...
Can I bleed using one of the two screw of the hoses?

[lancialulu]

No as air is trapped between #1 and top of cylinder. get the bleed nipples repaired or replace the calipers...

[bmarler]

lancialulu is correct that air will be trapped there. but it is possible to get most of the air out using those fittings. you may be able to at least get it driveable so you can get it somewhere to fix the bleed screws.

[Danrap]

Thank you bmarler. Yes this is my idea.
Considering that now I have brake pedal that goes down without braking, due (I think) to the master cylinder, I would to replace the master cylinder,bleed front brakes with nipples, by myself and then take the old lady to a mechanic to fix or replace rear calipers with new ones.

[Danrap]

https://drive.google.com/file/d/1lbK...ew?usp=sharing
What is this rubbish around the pump? oil that absorbed moisture?


This is the situation under the pedal

[fay66]

Thank you bmarler. Yes this is my idea.
Considering that now I have brake pedal that goes down without braking, due (I think) to the master cylinder, I would to replace the master cylinder,bleed front brakes with nipples, by myself and then take the old lady to a mechanic to fix or replace rear calipers with new ones.

Before disconnecting the master cylinder clamp off the flexible hoses to limit the air that can get in the system.
Brian.