Brake help!

[countryboytn]

Okay, so to make a long story short.. I was driving the other day and the brake pedal hit the floor, and I still had brakes but VERY little. I'v changed the master cylinder (bench bled it, in case anybody is wondering), changed the brake booster, and bled the brakes about 4 times now, with no change at all.

You can pump them now and get peddle on the fourth pump, which you couldnt before. but I dunno what to do, I'v been bleeding them and not getting ANY air, so any suggestions are great...right now, I'm almost $100 down and still not any better.

 

[smokey]

You still have air in the system. Start bleeding the brakes with the take the farthest from the master cylinder.
Some times you can just crack the bleeders and let it bleed by gravity just don't let the master Ho dry.

 

[countryboytn]

That's kinda what I figured, but assumed I would have it out by now. How do you gravity bleed them? Just open the bleeder valves, leave the lid off the master cylinder and let it drip/pour out?

also, whats the best way to get a bleeder vavle out, that's been rounded off? I screwed one up... I tried vice grips, and they won't get a grip on it either.

 

[smokey]

If it is bleeders on the rear wheel cylinders almost as easy to replace tthe cylinder only 12 bucks. Or try tapping a easy out in the bleeders hole and they some tile come out.

 

[1985 Ford F-150]

Gotta replace the wheel cylinder.

 

[countryboytn]

Replacing the wheel cylinder wouldn't be a problem, if it was on the back. It's the right front though, and I don't really feel like putting a new caliper on unless I have too..

I'll probably pull the wheel when I get a chance and see what I can do without making it worse.

 

[5.0Flareside]

and just like Randy said let it gravity bleed..

 

[countryboytn]

Will do... for how long? rough guestimate? or is there no telling?

 

[5.0Flareside]

depends on how much air is in the system. i had to do mthe same when i changed the rear end in my truck, took about an hour..

 

[smokey]

Until the air is out. Normally 10 minutes you will see the air bubbling out.
Is the front rusted or only rounded. If you had it loose already a ez out should being it out then stick a new bleeder in.

 

[countryboytn]

Alright, I'll definitely try it. and It's not rusted, calipers are only 7months old. but I think I overtightened them when I put them on.

 

[LEB Ben]

This time of year must be when Bronco brakes decide to take a crap. Had a front pad disintegrate on me a few weeks ago, the others still had 30k on them. And a couple days ago, both rear wheel cylinders decided to blow.

 

[countryboytn]

I'v had pads break like that too, on mine and my friends vehicles. (except I didn't keep driving it like he did, with sparks flying off and all...for two days)

That's one of the things I hate working on is brakes... cause it seems like they either work, or they don't.