Can't bleed brakes

[cadillac_al]

When the prop valve sticks after losing the rear brakes, some people have had luck unsticking it by bleeding the front brakes. You already did that right? One of my mechanic friends says he unsticks them by jumping on the brakes hard several times. That has only worked once for me. If either of those two techniques don't work you may as well buy another prop valve. Maybe the Mightyvac will work here too. Good luck.