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One of the leveling jacks goes up very slow when retracting. Does this mean there is air in the line that has to be bled out? How do I do that?

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What is causing my front brakes to lock up on my 1992 honda accord ,after changing the master cylinder ,booster and callipers ?

May have air in the lines going toward to the rear. Sometimes it can be real difficult to get air out of the proportioning valve as well. I would be amiss if I didn't mention that they may have not bled the master correctly. Also, the rod from the brake pedal into the booster has an adjustment too. Some hacks don't adjust that correctly. Good luck, I hope you find the problem. By the way, the best way to remove ALL air in a system is to jack the front of the car super high (safely). Open the rear bleeders and keep the cap removed from the master. Keep an eye so the level doesn't go too low as gravity draws the brake fluid level down and out the rear bleeders. I've bled many a problem child this way and works every time. You don't need those fancy pressure bleeders. Good luck.

May 19, 2014 | Honda Accord Cars & Trucks

1 Answer

Brake light is on ...2001 tribute

check fluid level in the master cylinder under the hood may be empty and need bled out entirely..meaning air is now in the system and needs removed..DO NOT DRIVE THE VEHICLE IN THIS CONDITION!!!its too dangerous..if the car wont stop it can kill you..the brakes can be systematically bled out by someone who knows the setup or get the car towed to your mechanic and let them do it..use DOT-3 brakefluid only..available at most stores...also look for leaks anywhere by each wheel..may have other issues..broken lines, leaking wheel cylinders etc...repost findings please..

Feb 10, 2013 | 2001 Mazda Tribute

1 Answer

New brake pads installed and still the brake pedal still goes all the way down and it sounds like the air is on but its coming from the brakes n i bled the brakes but they still don't work.

Check the following:
Fluid level in master cylinder is at correct level - between min and max marks or just below the bottom of the cap. If fluid level is okay then was master cylinder very low on fluid recently? If so it may have air trapped in it. Most master cylinder's these days need to be "bench bled" first.

However, the most likely problem is the seals in the master cylinder are bad. You will have to replace it. Another possible but rare problem could be the rubber section of a brake line is "ballooning" when you step on the brake.

The air noise you hear is most likely vacuum from the brake booster, which is normal.
Hope this helps.

Aug 06, 2011 | 1996 Pontiac Grand Am

1 Answer

How to replace a master brake cylinder on a 1989 oldsmobile 88 delta

First thing you need to do is bench bleed the new master master should have come with 2 plastic tubes and fittings.screw fittings into new master,fix tubes to fittings other end in to top of master where fluid goes.fill with fluid make sure the tubes are submergered in brake fluid for entire process.take a screwdriver and press plunger in rear of master.use short slow strokes to start you will see air bubbles in resovoir.slowly increase length of stoke watchin resovoir till no mome ready to install.Remove failed master,(loosen lines befofe removing mounting bolts)remove lines last.reinstall new master then remove bleeding tubes last install and tighten lines.Fill fluid replace lid,have a helper sit in car,loosen lines about half a turn.Have helper depress brake pedal slowly and hold down pedal untill lines tightened.when tight release pedal and repeat 5/6 times.fluid should come out of lines without any air when bled propperly.if failed master did not run out of fluid uyou should be finished.if pedal still soft/mushy will have to bleed a wheels also.use same proceedure but openening bleed screws not lines.may take many times to get rid of all air,you can see and hear the air exiting bleeders.keep an eye on fluid level while bleeding if u run out you are starting again

Jan 24, 2011 | Oldsmobile 88 Cars & Trucks

1 Answer

(4x4)I replaced all the steel brake lines from the junktion block on the frame by gas tank forward.Bled,Bled and Bled,when comming to a slow stop, pedel gets hard' there's a ratchiting sound (ABS Pump?)and...

The problem here is air in the ABS system, you must get the ABS hydraulic control unit bled, this can't be done with a special tool that holds open the poppet valves to each wheel so the air can be completely bled out. You must have the brakes bled at a shop OR the dealer that has this tool or its equivalent. There is no way around using the bleeding tool on this ABS system. I get this question over and over on FixYa.

Jan 09, 2011 | 2000 Chevrolet Silverado

3 Answers

Replace brakes. now they go to the floor. bled air

When you fixed the brakes, did you take the lid off the master cylinder. I just wonder if you spilled out your brake fluid. The only reason the pedal should go to the floor is if the brake fluid is gone or the master cylinder is not working. Check the fuse. Check the brake fluid level. The pedal only goes to the floor if there is no back pressure in the lines between the master cylinder the lines to the brake pistion on the calipers. Please give me a good ratin and keep me informed.

Jul 07, 2009 | 1999 Cadillac DeVille

3 Answers

Bleed brakes but no pedal

Good! You bled the master cyl. before installation! The proper order of bleeding the lines, is to start with the wheel the greatest distance from the master cylinder. Then work your way to the next greatest distance, and last, the closest wheel. Make sure all air is removed from the lines before you proceed to the next wheel, and frequently check the master cyl. level, because, as I'm sure you know, if you **** in air at the master, you have to start all over again. I'm assuming you don't have a power bleeder, so with a helper do this with car running (make sure it's on safety stands and not going to fall on you!) Pump pedal 3 times, no need to mash the pedal into the floor, just 3 pumps 1/2 way down, hold 3rd pump at half way down level while bleeder is opened, when flow is about to stop at bleeder, close bleeder and repeat til no evidence of any air. Let me know how it goes and if you need any help.

Apr 21, 2009 | 2003 Pontiac Montana

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