I really think both chambers are full. And it would make sense that the front chamber fills the rear lines since the the rear line connects to the front end of the master cylinder. Does anyone know?
This all started about a month ago when my rear brakes froze. Pulled over and they released on their own, only to find out that the rear metal brake line ruptured. (It was quite rusty). I got home thanks to the 2 chamber system, no problem
I have read in threads that rust and such in the lines can cause the calipers to freeze. But, could it have been caused by a faulty master cylinder instead? I, sadly, am ignorant of the inner-workings of a brake master cylinder. Could the piston not be returning to release pressure on the rear line?
Is there a way to test the master cylinder? Clean it? I'll spend the money on a new one if needed, but would rather not if it's not the problem.