Bleeding Brakes

[sirrom]

I have replaced my front wheel cylinders as they were starting to stick.
The new cylinders are in and I have bled the brakes using the pedal pump open and close bleed value and have also tried keeping the tube in a bottle with brake fluid and opening the bleed valve and pump pedal until no air bubbles come out. It has a very low pedal but will pump up very quickly after two or three pumps. Once you have a reasonable pedal you can hold your foot on the pedal and it stays at the same level. As soon as you take your foot off - low pedal again.
I started bleeding LR, then RR, then LF, and RF

Any suggestions on way forward or which is the better way to bleed.

thanks

[panky]

It could be the flexy hoses have collapsed inside and not allowing fluid through. This would be a symptom of your old cylinders appearing to stick as well.

[bmcecosse]

Sounds to me that the brake shoes need adjusting up !

[liammonty]

Sounds to me that the brake shoes need adjusting up !

Seconded. Even if you did it when you fitted them initially, they often ned adjusting up again when they centre after the first few presses on the pedal.

[kennatt]

its the classic. Air in system.................. long travel,soft pedal and no effect on pumping

adjustment pumps up hard once shoes are up against the drums. and holds.

[liammonty]

Err, that's not what I read in the post! OP says the pedal firms up after a few pumps.

[bmcecosse]

With 'air' there is usually more of a sinking feeling - and we are assured the brakes have been bled to death anyway!

[stag36587]

Sounds similar to extensive problems I (and a few others) gave had. Think he needs to prime the rear brake cylinders and what seemed to work best for me was to raise rear of the car and have a wooden beam pressed on the brake pedal overnight,