Help...I can't get my brakes to bleed.

[Telvis]

I am at a loss. I replaced the master cylinder and put new stainless lines front and back. I replaced the brakes front and rear. I bench bled the master cylinder prior to installation. I have tried and tried to bleed the brakes with no luck. I can't get any fluid to flow out. I have tried to do bleed them manually with someone pushing the pedal and with a hand vacuum pump. I finally bought a $100 air bleeding system but it would not work either. What the hell??? Am I missing something??

[moparguy01]

Did you replace the proportioning valve? usually if it doesnt want to bleed that is the case. but before you give up, crack all of the valves and leave overnight, see if they will gravity bleed overnight. sometimes it works. others it doesnt.

but my guess is the prop valve is shot.

[Telvis]

Is there a way to know for sure it's the proprotioning valve?

[kab69440]

Yeah, no fluid will flow through it. I went through the same thing about a year and a half ago. Swap it out and be done with it.

[Telvis]

I thought about changing the damned thing out when I installed the new brake lines but didn't. It's going to be a pain in the butt now that the engine is installed. Any good places to buy them? I guess I won't find it at my local auto parts store. I don't wan't to give YO any more money unless I have to.

[Chryco Psycho]

What about the rear rubber brake hose , it could be collapsed internally