Hello everyone and i'd like to thank you in advance for the help. I have a 91 pathfinder and i have adjusted and bled my rear brakes, but sometimes they don't work. What i mean by that is some days i can lock up in gravel and only the front leave marks. It appears that i get no rear brake action at all sometimes. When i bleed them i am getting no air bubbles, and i've bled at least a pint through each nipple by now and never once any air even the first time. Sometimes they seem tight for a few drives, when i adjust them they are tight for awhile and then i go back to having no rear brakes *sometimes* as they do sometimes work. The pedal always feels the same if that is relevant. Some mornings it feels great on my way to work, and then zero rear brakes on the way home.
However if i pull the ebrake as i am stopping, even just 2-3 clicks, then suddenly i can mash the pedal and leave 4 skid marks, but then it drags the ebrake so i can't drive that way.
I've taken it apart and each part seems fine. Does anyone know what causes this? Even when i manually adjust them until they drag they only stay tight for a day or so.
Again i appreciate any help! Thank you!