I've been having a problem where I have to pump my brakes once in order to get a full pedal. If I'm driving a long and hit them it goes almost to the floor if I pump it twice I have good brake. No leaks anywhere and it just started doing this one day so I don't see how air got into it. I'm thinking the master is bad anybody had any experience with this?

 

Don't drive, don't drive, don't drive. Check it to see how much there is and refill it. Flushing it might do some good.

 

You most likely have a air bubble in the system. You need to bleed the brakes