1600 brake problem

[DeMenTia]

Hello all,

Problem i'm having is that the brake pedal is dropping to the floor after the car is running.

Now, the front pads are new (disc) and the rear which are 260Z drums seem to be ok, the master cylinder has been rebuilt and i've bled the entire system.

I'm guessing it has something to do with the booster ? ..
is there a way to check if the booster is working ?

thanks

[Madhatr]

Booster problems generally result in the pedal becoming firmer. The booster provides power assitance. If you switch the car off does the pedal firm up again? what about if you pump the pedal?