Question about 1992 Buick LeSabre

1 Answer

No brake fluid going to drives side back brake

I had to change the brake line all the from master cylinder to back brake.and now when I went to bleed the brakes no fluid is coming out,do you know why not?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 193 Answers

1. You could have air in the lines yet, but more specifically, I would need to know if you have anti-skid system in your car. Also, you may have a proporation valve in the system that has to be activitated before the system can be bled.

In bleeding, you start at the rear wheels first and then work to the front, doing the master cyclinder last.
Finally, the brake master cyclinder is designed so that the front part of the cylinder pumps fluid to only one front wheel and only one rear wheel. The rear part of the master cylinder only pumps fluid to the other 1 front and 1 rear. This is so that if you loose your brakes, you will always have a rear and front working.
Bill

Posted on Nov 18, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Brakes went out,master cylinder is dry. filled the master cylinder pumped brakes and bled rear drivers side


    If there is a substantial fluid eruption, there are air bubbles still trapped in the system. You must repeat the bleeding procedure to remove that air. A modest disturbance in the fluid returning to the reservoir indicates a properly bled brakesystem.

    How To: Bleed Your Brakes - Feature - Car and Driver

    www.caranddriver.com/.../how-to-bleed-your-brakes-feature Car and Driver
Feedback

How To: Bleed Your Brakes - Feature - Car and Driver

www.caranddriver.com > Features

Car and DriverIf there is a substantial fluid eruption, there are air bubbles still trapped in the system. You must repeat the bleeding procedure to remove that air. A modest disturbance in the fluid returning to the reservoir indicates a properly bled brake system.

How to Bleed Brakes - Tips on Bleeding Brakes

Jan 01, 2016 | Cars & Trucks

1 Answer

Cant bleed my brakes on ford escape no fluid will come out of the master cylinder


Are you able to bleed the brake from the caliper you changed? If you can you may have a plugged bleeder at the master cylinder or the new one did not get drilled all the way through so the fluid comes out. Does the truck have ABS brakes? I am assuming so but not sure, if so you may have to reposition the valve in the line that cuts off the leak and shifts the fluid to the rear wheels in this case, it is in the lines, but at that I would think you still should be able to bleed the master cylinder. You may need to bleed all of the wheels before you can bleed the master.

Nov 09, 2015 | 2004 Ford Escape

1 Answer

I have a 1994 GMC Serra i had a brake line that started to leak for the back brakes so i replaced the whole line from the front to the back and i went to bleed the brakes for the back i had a helper pump...


If you have replaced the line from the front to the back, there is a lot of air in the line. The proper way to bleed the brakes (for the average guy with no shop) is to;

#1, OPEN the bleeder screw,
#2 THEN have your friend push the brake pedal down fully to the floor and HOLD IT DOWN. Then you
#3 CLOSE the bleeder, so no air can enter the line from there,
#4 THEN have your friend let the pedal up after you have closed the bleeder screw.

Repeat this process untill you have fluid coming out of the bleeder screw. Remember, after your friend has pumped the brakes a few times, the fluid level in the Master Cylinder's reservior will
go down, and you need to refill it as the fluid gets pumped into the line. Do not let it go empty, or you will have to start all over again. Every time the brakes get pumped, the fluid will only go down the line a few inches, so you will have to do this Procedure many times, like 15 or so.

Once you get the fluid coming out of the bleeder screw, do the bleed procedure a couple more times, until there IS NO AIR left in the system and all that is coming out is fluid with NO bubbles.

You MUST do BOTH sides, right AND left of the rear, as there is only a single line to the rear, which splits into two above the axle, and now there will be air in both sides. Then, tighten the screw, top off the master cylinder, and you are done.

If you simply opened up the bleeder screw, and then pumped the brakes with it open the whole time, the master cylinder simply pulled air back into itself every time you let the brake pedal up, resulting in no fluid being pumped into the line.

Also, if the master cylinder ever was EMPTY, then you may have to bleed the cylinder itself. This is done by disconnecting the brake line (rear brake, the one you just had off) from the cylinder, and putting a hose from the line inlet in a small loop back into the master cylinder's reservior. Then, pump the brakes. The cylinder will then pump the fluid directly back into itself. The idea is that you do not let the master cylinder pull any air back into itself, from the line inlet. So, as the cylinder pumps out the air, the only thing it can get back in is FLUID. Do this until there are no more bubbles coming out of the line.

Then perform the above-mentioned Bleeding Procedure. If you do the Bleeding Procedure correctly, and the fluid level in the master cylinder does NOT go down, and you are still not getting fluid to the bleeder screw, then that will tell you that you have to bleed the Master Cylinder.

Good Luck To You.

Jun 21, 2011 | 1994 GMC Sierra

1 Answer

I have replaced all brake parts including front brake hoses and let all the brake fluid to drain out of the master cylinder. Went to bleed the brakes and it appeared to bleed all air out of the lines etc.....


U forgot to bleed the BRAKE MASTER! When ur bleeding the brakes, make sure ur engine is RUNNiNG. I f u haven't got any BLEEDiNG tools that sucks all the fluid in ur car, try Bleeding first the master, 2nd will be the front wheel brakes, and the REAR brakes! If everything FAiLS go to ur nearest garage and have them fix it! Drive slowly, using ur engine and hand brake! Hope that helps u out!

Nov 17, 2010 | 1990 GMC S-15 Jimmy

2 Answers

Brakes go all the way to the floor, the van set for 1.5 years, I changed the master cylinder but have not bleed the brakes yet. could it be something else?


Indicates air still in the system. I suggest that you start at the master cyl, remembering to keep it full during & after each attempt at bleeding the system and to only fill it by using a funnel & allowing the brake fluid run down the side to eliminate new air being put into the system.

Bleed the master cylinder first by loosening those brake lines while someone has pumped up the system & is holding the pedal to the floor. Make sure your assistant is not releasing the brake pedal before you are tightening the lines each time after bleediing the system, and that all brake pedal movement is done slowly, especially releasing the brake pedal. It causes fluid to rise into the air, bringing air back into the fluid.

Next, go to the farthest brake away from the master cylinder & bleed it, working yourself to the next farthest until you finish with the closest brake. This prevents air from switching lines on you during the process.

If there are no leaks & you have followed this method, there shouldn't be any air in the system & your brakes should be good.

Double check inside the truck to see if there is brake fluid coming from the new Master cylinder behind the brake pedal, that indicates the new seals didn't seat properly.

good luck

Feb 15, 2010 | 2000 Dodge Caravan

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

1 Answer

Changing 4 calipers and there is no oil com out when try to bleed


The master cylinder supplies the pressure to the brake fluid that travels between the maste brake cylinder resevoir and the brake caliper pistons (through the brake lines. If the master cylinder fails there will be insufficient compression of the brake fluid to make the calipers operate as designed. Leaks in the brake lines and/or cylinders is a possibility, and unrelated to functionality of the master cylinder. Also, pistons located in the brake calipers can form a corrosion ring on their inside walls if there is breakdown in the brake fluid or moisture that gets into the lines. Operating the vehicle when there is insufficient brake fluid in the master cylinder resevoir can also lead to air getting into the brake lines, causing bad working brakes. Air compresses more than brake fluid, and the master cylinder isn't designed to compress air in the brake lines. Sounds like a bad case of "lack of maintenance", as opposed to bad advice from the mechanics. That said, there's no excuse for bad installation. But, it's tough to improperly install a brake line since they are nothing more than hollow metal tubes. There should be no rubber connectors installed in the brake lines. When bleeding the brake lines one must remove all of the trapped air before you will see any fluid appear. If the valves in the master cylinder are not properly operating the master cylinder will not allow the brake fluid to get into the brake lines.

Hope this helps.

Jun 13, 2009 | 1999 Volkswagen Passat

3 Answers

No brake pedal


you say you replaced cylinders did you replace the master cylinder? if so before you install it you must bench bleed did you do this? if not to bench bleed it you need to take it back out and fill it with fluid then push the plunger in and out half a dozen times to get the air out of the cylincer. be sure that the rubber " O " ring or gasket is on the back of it beforeyou replace it. Then the next step is to bleed the brakes starting with the passengers side rear wheel hen the drivers side rear wheel then the passengers side front wheel and finally the drivers side front wheel as you bleed them you will need a second person to pump the brake pedal and hold it for you as you loosen the bleeder valve and let the air out and be sre that when the pedal hits the floor that the person inside holds it there until you have tightened the bleeder valve as to not let anyair back into the system. you will need to bleed each wheel until you get strait fluid with no air coming out. also keep in mind that through out this bleeding process you will need to keep topping up the master cylinder as if it gets to low on brake fluid it will allow air into the line. thus causing you to have to redo this entire bleedng process again.

Oct 12, 2008 | 1996 Saturn SL

1 Answer

Unable to bleed front brakes


loosen the front brake line that goes to the master cylinder fill master cylinder up with fluid and bleed it first by attaching a flexible line from master cylinder front brake side submerge that line into jar of brakefluid keeping air from entering line get someone to pump brake pedal while ur holding line in a jar keep refilling the brake resivoir so no air gets in, once the master is bled front brake side then reattach the origional brake line then remove bleed screw from caliper and let fluid gravity flow down to calliper then bleed the normal way. more than likely your master cylinder has air trapped in the front portion good luck

Jul 01, 2008 | 1996 Chevrolet Blazer

Not finding what you are looking for?
1992 Buick LeSabre Logo

Related Topics:

239 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...