Need help with 88 735i brakes!!

[doitright]

Please help!! I own a 735i 1988 and have almost no brakes at all.the pedal holds pressure for about one second and then sinks to the floor.i have bleed the system and there is a tone of air in the driver side rear and front passenger side. the other two are perfect!! i also am getting a pulsation on the power steering hose every 5 seconds!! now i have checked up and down for leaks and nothing at all. how do i bleed the system right?? or how do i bleed the whole system. also if i turn the steering wheel all the way right or left the pedal sinks as soon as i push it!!

 

[Iqlima]

pump the pedal till it get hard !!

http://www.bimmer.info/forum/showthread.php?p=267730

 

[M30]

Have u check the power steering fluid? coz as u turn the steering the pressure is used to assist u turning the wheel and the brakes booster uses hydraulic power also from the power steering pump.