because of a brake pedal going to the floor (at the same time of the bearing that were broke?) pedal to the floor actually happened since i change the brake pads (and as stupid) as it is disconnected the front line.
i already changed my brake booster which had the hissing thing. i bled my brakes today (only front) do i need to do the rear at the same time? brake travel is already less then before wich is good.
but i thought it should start braking from the moment you hit the brake? is this right or not?

 

The rears need to be bled BEFORE the fronts - you start bleeding at the one farthest away from the master cylinder then do them in line length order.

 

thanks ill try tomorow

 

brake travel should be 1/4 to 1/2 inch before engage, always start bledding like so right rear , left rear, right front, left front

 

does the engine has to be on (runing) while bleeding,
btw is there an easy way loosening rusty bleeders?

 

It's a lot easier to bleed with the engine running so you have boost. Try some PB Blaster on the screws.