No pressure after MC rebuilt

[lukasdeopalenica]

Hi Guys,
After rebuilt of my brake system (new hoses, new seals at calipers and master cylinder) my brakes literally do not work at all. I tried to bleed the system, but it seems that the pump can not built the pressure and does not suck the fluid from the reservoir. Eventually I filled the hoses and calipers gravitically, just opened subsequently bleeding screws and waited for the fluid to come, and came at all points. Should the MC be bled additionally? I am almost sure, but not sure of course I have reassembled the MC correctly... I would be grateful for any tips

[lukasdeopalenica]

No one knows? 

[MattNoVAT]

As you have filled the system with fluid then I would start by checking the master cylinder first to ensure that it has been rebuilt correctly.

[thecolonel]

Dry rebuilds can cause the seals to flip over
the first time the pedal is pressed.
Pain in the butt, but does happen I'm afraid.

[lukasdeopalenica]

It sounds like that. Thank you. So I will disassemble the mc once again...I hope the seals are still in working condition