Spongy Brake Pedal

bof8t88 · Jun 15, 2011

Hello again everyone.
I need your help once again my 1.8 anniversary is suffering with a spongy brake pedal.
i have read a few bits that i could find on the forum ,so this is what i have done .
2 new rear cylinders dismantled the rear shoes to find the off side adjuster was seized so done the norm freed it up and anti seize compound. put it all back together and reset the hand brake as described ,bled the brakes allround from front n/s front o/s back n/s back o/s.
car stops ok but the pedal is not as solid as it should be if you pump the pedal once it will go solid if you keep your foot on the pedal it will gradualy go down .
i am not losing any fluid so now i am stumped.. ANY IDEA's Please..........

Mrfulwell · Jun 15, 2011

Any idea how old the brake fluid is? It should be changed every few years, I have a 1999 anniversary 1.8 and had re same problem. Drained the entire system and put new fluid in and it seems a lot better now. Hope that helps.

fishingfitter · Jun 15, 2011

clamp the flexi hoses off,you will then a have a solid pedal.put foot on brake and get somewhone to release clamps one by one the pedal will drop but one will drop more than others.thats where the air will be.keep foot on pedal until all clams have released

bof8t88 · Jun 15, 2011

All the fuid is new synthetic
i am sure there is no air in the system but i could give the clamps a try.
is there any chance the master cylinder could need a repair kit ?
Thanks

fishingfitter · Jun 16, 2011

To test the master cyl gently put pressure on pedal if seals are leaking the pedal will slowly go down to floor.

bof8t88 · Jun 16, 2011

Thanks fishingfitter
i will check that out later !:doh:

Hippo · Jun 17, 2011

fishingfitter said:
To test the master cyl gently put pressure on pedal if seals are leaking the pedal will slowly go down to floor.

Don't know about these so was wondering if the master is leaking, is that internal so you won't see fluid loss, or will the fluid come out and drip?

fanatic · Jun 17, 2011

Hippo said:
Don't know about these so was wondering if the master is leaking, is that internal so you won't see fluid loss, or will the fluid come out and drip?

Depends normally scored internally

jamesmartin · Jun 17, 2011

often get splashing /disturbance in reservoir with poor master cylinder seals

Spongy Brake Pedal

bof8t88

New Member

Mrfulwell

New Member

fishingfitter

New Member

bof8t88

New Member

fishingfitter

New Member

bof8t88

New Member

Hippo

Lord Hippo

fanatic

RESPECT IS EARNED, BEATINGS ARE FREE ;-)

jamesmartin

Well-Known Member

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