Was the master cylinder empty the first go round?
It is possible the master cylinder is shot, The plunger inside is no longer sealing on the cylinder walls and is allowing fluid to pass by instead of pushing it.
Seems everybody has a way to bleed the system, some effective, others just sort of winging it going off of hearsay.
I am pretty much old school and like carbureted stuff over the new high tech stuff.
I have found that pressure bleeding (link below) pushes the fluid and air out the fastest and more effectively, some think that gravity bleeding is the way to go. I have Jeeps and work on 4x4's. I disagree, as if your brake hoses are high (loops/ curls) the fluid does come out the bleeder, but the air rises to the top and does not "fall out" like the fluid. (sort of like your shampoo bottle turned upside down).
See my answers on the link below, this is the way I was taught back in the early 1970's, pretty much still works well on most vehicles.
Keep us posted.
Thursday, December 22nd, 2016 AT 7:36 PM