hy all does anyone no why my front brake on my 4rt has gone spongey ive fully checked theres no leaks ,pads are half worn ,ive fully vacuum bled the system with fresh fluid and still spongey any ideas ,

Edited April 12, 201214 yr by Andy

Sounds like you got air in there somehow. You may have boiled the fluid?

Have you tried old fashioned bleeding as well?

ye ive tryed with shringe and pumping lever usally my vaccum bleeder never fails i was thinking could it be the seal kit in master cylinder gone the reason im saying that is i have a brake but i have to pull lever in as far as touching the bars