Question about Ford F-150

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Rear brakes not working on 1989 f 150 traced the problem to no fluid coming from master cylinder. There is plenty of fluid in resevoir and front brakes work fine. could something be plugged in master cylinder outlet for rear brakes? Thanks for any help. Danny P.

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  • Master
  • 290 Answers

There are seals in the master cylinder that may be bad.

Try bench bleeding the master (there are cheap tubing kits for this) and see if fluid comes out of the ports. If no fluid after bench bleeding, replaced the master cylinder (usually come with a cheap bleeder kit anyway)

Posted on Apr 13, 2009

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3 Answers

Tried bleeding brakes on a '98 Windstar by starting with the longest line first, but all i got was air just barely spitting out fluid. Attempted this process about 50 times with the same results each time....


In my experience, brake master cylinders that have two resevoirs use one, usually the smaller of the two for the rear brakes and the larger for the front brakes. I've never heard of a vehicle that brakes using one side of the vehicle or the other. If I were doing this bleeding I'd rent a power bleeder system from my nearest Autozone or your preferred auto parts dealer, and use that to help me. Have plenty of fluid on hand and try the process with the pressurized system. It always works like a charm for me.

Aug 10, 2014 | Cars & Trucks

3 Answers

Drained break fluid and pedal goes to floor, i have a 95 dodge neon i also have Bleed all the wheels starting with the rear pass side it is normally the furthest from the master cyl then the other rear...


start from the rear driver side, and then the rear passenger side, and the front passenger side,and then the driver side make sure you keep plenty of fluid in the master cylinder during bleeding proccess

Apr 09, 2011 | 1995 Dodge Neon

1 Answer

The front/driver's side of my van is leaking brake fluid very fast.


sounds like a broken brake line or a brake master cylinder problem. the master cylinder has a resevoir ontop were you add brake fluid. Does your brake pedal feel spongy? if so sounds like your master cylinder needs to be replaced.

Mar 15, 2011 | 1999 Plymouth Grand Voyager

3 Answers

I am having an issue where the brake pedal goes all the way to the floor before it will work. From what I understand it may be the brake master cylinder malfunctioning. I am considering replacing it...


Check the vacuum booster first
Shut the car off after it idles for 3 minutes
Apply your foot on the brake and hold
If the pedal seems hard at first and did not go down all the way keep your foot on it for two more minutes
If the pedal gradually goes down to the floor the brake booster is leaking
If not start the car and let idle again
\With the car still idling step on the brake pedal again and hold
If the pedal goes to the floor in a second the master is shot instead

Jun 22, 2010 | 1986 Toyota Camry

3 Answers

Losing brake fluid(2001 kia sportage)


Check the rear wheel cylinders if you have drum brakes on the rear. Check the master cylinder cap to be sure it's on right & snug. Use D.O.T. 3 fluid,not synthetic. If you're losing fluid there's a reason. Check the front brake pads & slides for the calipers,could be frozen with rust & eating up the pads. Fluid would seem low if the pads are shot.

Jun 28, 2009 | 2001 Kia Sportage

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

Brakes


I would replace the master cylinder. If there isn't a massive leak in your lines chances is are it's the master cylinder or the brake booster. Cylinder is an easier job. Try a junk yard if your looking to get it cheap.

Jun 07, 2009 | 1995 Pontiac Bonneville

1 Answer

No brake fluid going to drives side back brake


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

Oct 11, 2008 | 1992 Buick LeSabre

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