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Weird Brake Issue

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Old 02-24-2011, 11:36 AM
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OK, so i have my first wheel off, the bleeder open, with the line running over the bleeder and into the fluid. But when i try to depress the brake pedal, it barely moves. I tried it 15-20 times, no change. So i removed the caps off the reservoir and tried again, no change.

Ok so i figure there must be air in the MS, because i don't really see a wrong way to install it. So I have no clue where to go from here. God i hate brakes
Old 02-24-2011, 11:59 AM
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The pedal will be kind of stiff with no power assist. Just gotta push hard.
Old 02-24-2011, 12:02 PM
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my problem was the break booster, it had a vacume leak on the bottom seal where the pedal connects. I experienced the sponginess and lack of hold and grunging noise just like you say you are. and the vacume leak was not noticable as far as hearing it either. ya may want to check that.
Old 02-24-2011, 12:23 PM
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Originally Posted by Bustedback
The pedal will be kind of stiff with no power assist. Just gotta push hard.
I thought of that so I fired her up. Instantly it sucked just a bit of fluid up from the res which I refilled, but no change with it running.
Old 02-24-2011, 12:25 PM
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I just turned it off. Went I went to hit the pedal it was soft for a very breif moment and I heard a woosh of air above my foot
Old 02-24-2011, 12:57 PM
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You'll only get about three power assisted pumps with the engine off.
Old 02-24-2011, 01:14 PM
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I'm not getting any assist at all, on or off
Old 02-24-2011, 03:03 PM
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You have a bad booster, but make sure the big vacuum hose is connected before ripping the booster out of there.
Old 02-24-2011, 03:39 PM
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Doesn't seem like it would be bad since there were no booster issues prior to removing the master cylinder
Old 02-24-2011, 08:36 PM
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busted back right, if there is no power assist, and the booster vaccume line is hooked up, u have a bad booster. Alot of times fluid can leak from the master cyl into booster, the brake fluid will eat those seals out quicker then u can... erm.... pee.
Old 02-25-2011, 05:46 PM
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You're not understanding, the booster was working fine till it came apart.

I'll figure it out.
Old 02-26-2011, 07:14 AM
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I Believe you and hello everyone. I know I am new here and this is my first post. I have seen the photo of your jeep so I am assuming you have the bleeder turned out a couple turns? Did you check the container you are using to catch the fluid to see if any has gone in? If not the reason your pedal may still not go down is your bleeder screws may be rusted up and plugged. I am originally from Vermont and see this a lot. If they are clean them out and re-attach the hose and try again. A paperclip works good lol. Keep me informed and I will do what I can to try and help but take a good look at you bleeders and let me know.
Old 02-26-2011, 08:55 AM
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The bleeders are all able to gravity bleed just fine, it's air in the MS. In about 20 minutes I'll be out there proving it's not a faulty booster. Just no way it can be.
Old 02-26-2011, 06:02 PM
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I found the problem. See you guys couldn't help me because you assume i'm intelligent, when in reality i'm incompetent and did not line up the pedal rod with the master cylinder when i installed it.

Working like a charm, and that bleeder/bottle idea is genius. I love this place.

Thanks!
Old 02-26-2011, 11:53 PM
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Glad you got it going!


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