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01 2.0D Brake master cylinder problem - polecat10
Hi,
Hoep somebody can help...
Just changed the rear brake pads and didn't loosen the bleed nipples before pushing the pistons back but did loosen filler cap on the fluid reservoir.
Now the brake pedal is firm at first but slowly sinks to the floor, so the brakes are not working.
Questions- Does this sound like the rubber valve in the master cylinder has been damaged or inverted, and if so how is the master cylinder accessed?
Or could it be something else?

Any help greatly appreciated- I'm posting this for my next door neighbour who really needs to get the car back on the road asap.
Thanks,
Mike.
01 2.0D Brake master cylinder problem - davecuk
I don't usually loosen the bleed nipples before pushing the pistons back, as the fluid normally just raises the lever in the brake fluid reservoir. Never had a master cylinder fail because of it.

I would bleed the brakes first and check for leaks on the slave cylinders.