Is my master cylinder f**ked????

[Bobbys14]

Right story is, changed the rear calipers removed abs and ran new lines around.. Started bleeding while the car was off wasn't getting anything kept going still nuttin pedal just go to the floor, was getting a bit of pressure while pumping and it held so wasn't a leak in the system but when i let off and go again it would go straight to the floor kept kept going and was sure it was getting good, so i started the car and the pedel nearly went to the floor itself it was so so soft when i pressed it so while car was running i bled it an foot still going to the floor, when i pump the pedal really quick for a while the hydro gets tight and when i pull it the hydro keeps its pressure but the pedal goes to the floor after taking foot off. I have bled enough was doing it the last 3 nights..

Thanks for reading any help appricated.

[Rob32]

Id say you have a massive airlock somewhere

[Bobbys14]

Id say you have a massive airlock somewhere

I gravity fed the system for age's and bleed for hours possible air in the cylinder or is that possible?

[Robbie Daly Ps13]

Ya can't have a massive airlock somewhere.....! Are you 100% theres no air in the system....! Did ya try bleeding the master cylinder itself and did you let the master cylinder run dry....!

[Bobbys14]

Ya can't have a massive airlock somewhere.....! Are you 100% theres no air in the system....! Did ya try bleeding the master cylinder itself and did you let the master cylinder run dry....!

How do i bleed the cylinder? The line's was dry and the cylinder ran dry but i let it gravity feed head is minced 3 days trying to sort it..

[Rob32]

Ya can't have a massive airlock somewhere.....! Are you 100% theres no air in the system....! Did ya try bleeding the master cylinder itself and did you let the master cylinder run dry....!

cant have a massive airlock then you ask has he massivly airlocked it


Anyway, assuming you stripped all the lines from front to back and replaced them i would suggest bleeding them section by section, meaning crack them open at all the joins and bleed from front to back to get the fluid down, then you need to bleed the caliper the furthest away from the master cylinder first, eg. back left then back right then front left then front right

[Bobbys14]

cant have a massive airlock then you ask has he massivly airlocked it


Anyway, assuming you stripped all the lines from front to back and replaced them i would suggest bleeding them section by section, meaning crack them open at all the joins and bleed from front to back to get the fluid down, then you need to bleed the caliper the furthest away from the master cylinder first, eg. back left then back right then front left then front right

I let ig gravity feed and i'm getting no air at all from any caliper.. How do i bleed the cylinder?

[Rob32]

I let ig gravity feed and i'm getting no air at all from any caliper.. How do i bleed the cylinder?

so when you pump the pedal someone holds it and you open the nipple only brake fluid comes out? do you have a hydro handbrake?

[Bobbys14]

so when you pump the pedal someone holds it and you open the nipple only brake fluid comes out? do you have a hydro handbrake?

Yes and yes..

[Dunnedriftin]

Yes and yes..

is your hydro open or closed (pulled) when trying to bleed?