Question about 1991 Plymouth Sundance

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Just installed rebuilt master cylinder but still getting lots of brake pedal travel after bleeding master and twice on all entire brake line system. what could be the problem here

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If you are losing brake fluid you still have a leak in the system, if not then take it into a garage and have it pressure bled.

Posted on Sep 02, 2010

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Ive got a 1994 Nissan pickup 4x4 cant get brakes to bleed up and stay


may be bad master cylinder ~ you try to gravity bleed them first?

or you may have to bench bleed the master cylinder then re-install, gravity bleed to start

then finish off with the one-man bleeder or 2 person technique


i don't know how you did it, so i'm covering my bases by saying all that

Mar 17, 2015 | Nissan Cars & Trucks

1 Answer

No brakes on a 1986 honda accord


Did you get a good bleed with fluid coming out at all four wheels? If they bled good, and the pedal still goes to the floor, you need to check the brake master cylinder-it is probably shot with an internal leak. An internal leak will not let fluid pressure build up, so no brakes.

Did you keep the brake fluid reservoir from going dry while bleeding? If it went real low, air might have got back into the lines.

It is not uncommon when bleeding brakes on an older vehicle for the master cylinder to suddenly develop an internal leak and require replacement . Here's why: pushing the pedal all the way to the floor causes the master's piston to push in farther than ever before. The rubber cups then travel over a section of the cylinder not usually touched by the cups-old fluid can develop a crud there and when the piston pushes over it, the cups can get ruined. To avoid this when bleeding brakes, put a short piece of 2X4 wood block under the pedal. Then the pedal will not extend the master's piston beyond it's normal travel. Of course on a new master cylinder, you do not have to do this. A new master cylinder does require bench bleeding before installing, however, to ensure no air pockets develop from there.

Aug 24, 2014 | 1986 Honda Accord

1 Answer

Master cylinder


The master cylinder is mounted on power brake unit (the big black round canister) on firewall held down with 2 12mm nuts depending on braking system usually 2 10mm brake lines need to be removed on out it comes. Bench bleed new master cylinder before install . Fill reservoir with brake fluid and slowly push piston about 1 inch back and fore until air is gone ( assuming mater comes with bench bleed kit ) then install and repeat with someone pressing on pedal lock line closed before pedal is released again EG pump pedal ok hold it (open line watch fluid come out close) ok let up pump it up again repeat may be twice per line. the pedal should be firm once done.

May 03, 2014 | Acura Integra Cars & Trucks

1 Answer

1998 nissan altima brakes to the floor


Still air in system, sounds like the master cylinder has ran dry during the bleeding process, pumping more air into system. The lines running to the rear brakes are long, so you must bleed the fluid out the bleed screw in the rear 10+ times each side. Bleed, bleed, and bleed some more, keep bleeding untill that pedal feels good.

Dec 08, 2013 | Cars & Trucks

1 Answer

How do I bleed brakes on a dodge stratus 1998


  • PRESSURE BLEEDING
  • MANUAL BLEEDING
  • Print
    For vehicles equipped with an Anti-lock Brake System (ABS), please refer to the ABS bleeding procedure at the end of this section.
    The purpose of bleeding the brakes is to expel air trapped in the hydraulic system. The system must be bled whenever the pedal feels spongy, indicating that compressible air has entered the system. It must also be bled whenever the system has been opened or repaired. If you are not using a pressure bleeder, you will need a helper for this job.

    WARNING Never reuse brake fluid which has been bled from the brake system.


    MASTER CYLINDER

    See Figure 1
    If the master cylinder is off the vehicle, it can be bench bled.

    1. Secure the master cylinder in a bench vise.
    2. Connect 2 short pieces of brake line to the outlet fittings, bend them until the free end is below the fluid level in the master cylinder reservoirs.
    3. Fill the reservoir with fresh DOT 3 type brake fluid.
    4. Using a wooden dowel, or equivalent, pump the piston slowly several times until no more air bubbles appear in the reservoirs.



    0900c15280089cdc.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Fig. 1: Attach bleeding tubes to the master cylinder and position them as shown

    1. Disconnect the 2 short lines, refill the master cylinder and securely install the cylinder cap.
    2. If the master cylinder is on the vehicle, it can still be bled, using a flare nut wrench.
    3. Open the brake lines slightly with the flare nut wrench, while pressure is applied to the brake pedal by a helper inside the vehicle.
    4. Be sure to tighten the line before the brake pedal is released.
    5. Repeat the process with both lines until no air bubbles come out.
    6. Bleed the complete brake system, if necessary.

    If the master cylinder has been thoroughly bled and filled to the proper level upon installation into the vehicle, it is not necessary to bleed the entire hydraulic system.


    PRESSURE BLEEDING

    When bleeding the brakes, air may be trapped in the brake lines or valves far upstream, as much as 10 feet from the bleeder screw. Therefore, it is very important to have a fast flow of a large volume of brake fluid when bleeding the brakes, to make sure all of the air is expelled from the system.
    On Cirrus, Stratus, Sebring convertible and Breeze models, the following wheel sequence should be used to ensure that all the air is removed from the system:


    Left rear wheel Right front wheel Right rear wheel Left front wheel
    On Sebring coupe and Avenger models, the following wheel sequence should be used to ensure that all the air is removed from the system:


    Right rear wheel Left front wheel Left rear wheel Right front wheel

    1. You should use bleeder tank tool C-3496-B or equivalent, with the required adapter for the master cylinder reservoir to pressurize the hydraulic system for bleeding. Make sure to follow the manufacturer's directions for using a pressure bleeder.
    2. Attach a clear plastic hose to the bleeder screw located at the right rear wheel, then place the hose into a clean jar that has enough fresh brake fluid to submerge the end of the hose.
    3. Open the bleeder screw at least one full turn or more to get a steady stream of fluid.
    4. After about 4-8 oz. of fluid has been bled through the brake system and an air-free flow is maintained in the hose and jar, close the bleeder screw.
    5. Repeat the procedure at all the other remaining bleeder screws. Then, check the pedal for travel. If pedal travel is excessive or has not improved, enough fluid has not passed through the system to expel all of the trapped air. Be sure to monitor the fluid level in the pressure bleeder. It must stay at the proper level so air will not be allowed to re-enter the brake system through the master cylinder reservoir.
    6. Once the bleeding procedure is complete, remove the pressure bleeding equipment from the master cylinder.


    MANUAL BLEEDING

    See Figure 2
    Proper manual bleeding of the hydraulic brake system will require the use of an assistant.
    On Cirrus, Stratus, Sebring convertible and Breeze models, the following wheel sequence should be used to ensure that all the air is removed from the system:


    Left rear wheel Right front wheel Right rear wheel Left front wheel
    On Sebring coupe and Avenger models, the following wheel sequence should be used to ensure that all the air is removed from the system:


    Right rear wheel Left front wheel Left rear wheel Right front wheel


    0900c15280089cdd.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Fig. 2: With a clear plastic hose in a container of clean brake fluid, open the bleeder screw at least one full turn

    1. Attach a clear plastic hose to the bleeder screw located at the right rear wheel, then place the hose into a clean jar that has enough fresh brake fluid to submerge the end of the hose.
    2. Have an assistant pump the brake pedal 3-4 times, and hold it down before the bleeder screw is opened.
    3. Open the bleeder screw at least one full turn. When the bleeder screw opens, the brake pedal will drop.
    4. Close the bleeder screw. Release the brake pedal only AFTER the bleeder screw is closed.
    5. Repeat the procedure 4 or 5 times at each bleeder screw, then check the pedal for travel. If the pedal travel is not excessive, or has not been improved, enough fluid has not passed through the system to expel all of the trapped air. Make sure to watch the fluid level in the master cylinder reservoir. It must stay at the proper level so air will not re-enter the brake system.
    6. Test drive the vehicle to be sure the brakes are operating correctly and that the pedal is solid.

    May 31, 2012 | 1998 Dodge Stratus

    1 Answer

    Have an 89 festiva changed 5 master cylinders and still cant bleed front driver and rear pass wheel and also changed distribution block 3 times. i cant bleed it rite from the front port of the master...


    Section 06-06: Hydraulic Brake System 1992 Festiva Workshop Manual GENERAL SERVICE OPERATIONS Manual Bleeding
    1. Read Hydraulic System Bleeding General Information.
    1. Clean all dirt from the master cylinder filler cap.
    1. Fill the master cylinder with the specified brake fluid. During the bleeding operation do not allow the master cylinder to run dry.
    1. If the master cylinder is known or suspected to contain air it must be bled before the wheel cylinders or calipers. To bleed the master cylinder, loosen the front line fitting and have an assistant push the brake pedal slowly through its full travel. While the assistant holds the pedal, tighten the brake line fitting. After the line fitting is tightened, the assistant may release the brake pedal. Repeat this procedure on the rear brake line. Repeat the entire process several times to ensure all air has been removed from the master cylinder.
    1. Remove the bleeder screw cap from the appropriate rear wheel cylinder.
    1. Position a box end wrench on the bleeder fitting.
    1. Attach a rubber hose to the bleeder fitting. The hose has to fit snugly around the bleeder fitting.
    1. Submerge the free end of the hose in a container partially filled with brake fluid.
    1. Loosen the bleeder fitting approximately three quarters of a turn.
    1. Have an assistant push the brake pedal slowly through its full travel and hold it there.
    1. Close the bleeder fitting.
    1. Have the assistant release the brake pedal.
    1. Repeat Steps 9 through 12 until air bubbles cease to appear at the submerged end of the bleeder hose.
    1. When the fluid entering the bottle is completely free of bubbles, tighten the bleeder screw, remove the bleeder hose, and install the bleeder screw cap.
    1. Repeat Steps 5 through 14 at the appropriate diagonal front caliper.
    1. Check the master cylinder fluid level. If necessary fill it to the correct level with the specified brake fluid.
    1. Check pedal feel. If the pedal remains spongy, repeat the bleeding process or, if necessary, refer to Diagnosis and Testing in Section 06-00.

    Jan 04, 2011 | 1991 Ford Festiva

    4 Answers

    No brakes


    the master cylinder must be bled before installation. why did you replace the master cylinder? check this site out. lots of good info.
    http://www.aa1car.com/

    Apr 12, 2010 | 1990 Toyota 4Runner

    2 Answers

    Can not get a pedal, replaced master cylinder twice, bled everything, no pedal...can't seem to get fluid out of the 3 front ports on the master cylinder...could both master cylinders be defective, or am I...


    Did you bleed the master cylinder before you put it in the vehicle?This usually makes it easier to bleed the entire brake system if this is done before you install the master cylinder.Other wise all you have done is put air in the brake system.The master cylinder kit usually comes with a bleeder kit.This is for bench bleeding the master.Hope this helps.Good luck.

    Dec 31, 2009 | 2001 Chevrolet Tracker

    3 Answers

    No brakes push pedal to floor


    leaky rear break cylinder or master cylinder

    Oct 02, 2009 | 2001 Chevrolet Blazer

    2 Answers

    No pedal


    Hello;
    Did you bleed the master prior to installation? If not you may have a bunch of air trapped in the system. Start at the master and use a pressure bleeder too get the air out. If you have anti-lock you may have to have the dealer purge the system.
    Thanks;
    Rich
    RPM Northwest

    Jun 04, 2009 | 2004 Dodge Ram 2500

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