Master Cylinder Question

Ok, I thought the whole purpose of the split resevior on the master cylinder was to make it so you still would have brakes if one or the other failed for whatever reason? I ask this because last weekend, I had a rear brake line failure. it was the main line along the frame. Anyhow, afterwards, the brake pedal goes right to the floor.It had MAYBE enough brakes to move it at idle within a parking lot,but no way it would be able to stop at any kind of speed above idle. Anyone have input on this? doesnt sound right to me. Luckily i was in a parking lot when it happened, but what if it was at speed on the road?

Bundy

funny how that works isn't it,,, if you pump hard and fast you can stop ,but some systems are L/R on the front and rear That can really mess with you when finding a problem on a older car,,,,glad you didn't wreck it

Eh, its because of the prop valve, it wont let the front brakes apply until the rear brakes touch the drums.