Topic: brake problems

[norcalyoter]

My brake pedal sinks to the floor.  If I pump the brakes it holds pressure fairly well.  when I release the brake and press it again while driving, it sinks to the floor again.  I bled the Master cylinder on the sami, and bled the brakes according to the manual, and I still have the prob.  I bought a used MC and installed and still have the problem.  Unless I didn't bleed enough I'm thinking it's another bad master cylinder.... Imput?

[79coyotefrg]

get someone to pump and hold the pedal  when you bleed the system,  dont gravity bleed or  use one of those pesky bleeder pump things,  have somebody pump a couple times then hold the pedal dow firm while you open a bleeder on any wheel,  close bleeder and have them pump a few times and then hold down firm while you open the bleeder ,  when you open the bleeder and get nothing but fluid  then move to the next wheel

[GRW]

1st off think about some Speed bleeders. 
2nd Did you bench bleed the master?
3rd Sami's have any issue with the rear brakes being a peta to bleed (see 1st item, it helps).
4th make sure you adjust the rear drums as tight as you can. I try to keep my e-brake ajusted so it engages (hard) before it is 1/2 way up. Just short of dragging/slight drag is about were I like mine.