Hey guys have the truck jacked up (84 pickup) I am currently attempting to bleed the brakes. I started with sucking out the most of the old fluid in the reservoir. The filled with clean fluid. I then started with the passenger rear. GF was manning the brake and depressing three times really slowly while I opened the nipple(had line running into bottle with more fluid). We got about 2oz of fluid out and then nothing. The fluid stopped coming out and the pressure on the pedal stopped releasing.
After this happened I tried the driver rear and nothing came out. Also the pedal is only depressing a half inch or so now.


My questions
1 is this a cog
2 if so best ways to unclog if possible.
3 where should I start looking for clogs. Should I say screw it and just replace the brake lines. Trying to make a 4 hr trip on Sunday. So trying to get a temporary/permeant fix by then.
4 how much would it cost to replace hard and soft lines.

 

I do have fluid at the t junction on the rear axle. Could it be the rear drum brakes. Something cloged there. Vehicle does not have a lot of rust (ca truck).

 

Do you think you got dirt in the brake lines?/

Pull the rear brake bleeder valves out and see what happens.just watch your eyes don`twant brake fluid in your eyes.

Something is stuck someplace.

 

So I've pulled the bleeder out. I used a paper clip to clear any clogs in the seemed fine and was able to blow through it. Some fluid came out after the bleeder was out. It didn't shoot out though. Seems to just trickle out.

 

Gotta start someplace.

if you have pressure at the tee in the rear .

when that is loosened up does the pedal drop to the floor??

Some thing is clogged from there to the wheel cylinders.

 

Got to ask. Is the truck running while you are trying this? I only ask cause you say the truck is jacked up. Some people don't like people sitting in jacked up trucks when they are working on them.
Or did you mean jacked up to be lifted?

Just asking

 

Truck was not running. That shouldn't effect it should it. Truck was on jack stands. Gonna try a vacuum bleeder today and see of that helps.

 

It should be running to do this technique as it has a break booster that runs on vacuum from the motor. Powered bleeders I think will work when the trucks off.
Good luck

 

So I tried it again with the motor running and didint notice a big difference. But at that point I already made a two hour round trip o but a vac pump. Got the mighty vac. Worked pretty good. Need to do it again but defiantly an improvement.

 

It can take a while with the old school technique especially with lots of bubbles in the line. Glad the power bleeder worked well for you.

 

Your girl is doing it right, right? Pump pedal 3-5x, then hold pedal down and push down when she feels pressure drop?

 

Yea that's what she was doing. The vac pump helped get it drivable. Just got back today from Death Valley. Brakes were pretty sloppy but worked enough to get us there and back safely. Put about 6 hours on dirt roads. Pretty cool place.

 

Try doing this:

Get a long line, about 2 feet or so of tubing. Get a bottle and put the line in there submerged in brake fluid. Then place said bottle higher than the caliper and open the bleeder while someone pumps. No air can come back in b/c the line is submerged in fluid and the air is displaced and put out the top of the line due to the height it has to travel.

It is also possible (disconnect the batter for this), that you could take the cap off the master and put a stick or something to hold the brake pedal down over night. Believe it or not the air will purge itself. I do it all the time to motorcycles b/c the master is WAY to small for the pump method.

 

Cmj for the second method I take the lid off the master and have the brake depressed over night. I don't have the bleeders open right? Any one else ever try this. It's currently snowing. Already put 10" or so on the ground so might have to wait or go to a parking garage and leave it there.