I'm having problems with my brakes and never used to have problems but they now do not stop my truck very fast and I have to push the pedal all the way to the floor they used to make this swish sound when you used to hit the pedal but now doesn't make that sound and it goes straight to the floor any thoughts on what the problem

 

Sounds like your booster. Disconnect the hose and hook up a 'mighty-vac' dealio and see if can pull vacuum. Come to think of it, you should even be able to suck on it and be met with resistance. Good time to pop a gauge (or your thumb) onto the vac pump and see if its pulling.

 

Ok i well have to try that I also just bleed my brakes and I got a little bit of braking power back

 

I bleed the brakes yesterday and they went to the floor again today and I checked the vacuum pump and its working do think that is the booster then