Peeps... That might be a simple explanation, and I get it, if that's the kind of master cylinder you have. But it's not how any of my brake system have worked on my 13 F150, or my 97 F150 or my 86 Mustang or my 03 Rav4 or any vehicle I've ever bleed the brakes on since I was a teenager... ;)
Open a single bleeder valve on a wheel and the pedal goes to the floor each and every time no matter how many times you do it and you will have to add brake fluid to the reservoir because it drains it all out of the bleeder..
I remember the dual reservoirs on my old 71 LTD and when I bleed the brakes on it, I'd have to fill up the individual reservoirs depending on which brakes I was bleeding (front or back), but each time I did that, the brake pedal went to the floor each time and more and more fluid was lost out of the open bleeder...
So, I don't know what to say, other than I just did this yesterday on the RAV4 and each time I opened a bleeder, the pedal went to the floor and I had to add brake fluid to the system to replace it and never did I have a situation where I had an open bleeder when the pedal didn't go to the floor.
Mitch
