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I am leaking break fluid somehow. I don't see a puddle anywhere. I've looked at the master cylinder. I don't see any leaking there. I'm not sure where else to look for the leak.

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It's possible if you have found any visible leaks around any wheels that the master cylinder is leaking from the rear into the brake booster

Posted on Aug 03, 2009

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2 Answers

Think master cylinder is going out, had no breaks added fluid and pumped breaks seemed fine when to drive and went out . How can I be sure.


their are two brake lights one for e-brake on and the other is main brake system to alert you to low fluid in master cylinder --you have a leak somewhere look under vehicle for fluid by tires on ground even if you put fluid in master you still wont have brakes do to air in lines and until leak repair

Aug 06, 2015 | Ford Cars & Trucks

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Break line broke replaced no leaks can't get break paddle99 Chevy


Sounds like you may have an air bubble in the master cylinder. The most effective way to deal with that is getting a master cylinder bleeder kit from your local parts store - make sure it has the metal clips that will hold the hoses in the master cylinder. Install line adapters after removing brake lines from the master. top up the fluid in the master and install hose clips, making sure the end of the hoses are in the brake fluid at least 1 inch. Slowly pump the brake pedal, making sure you bottom out the pedal and release SLOWLY so you don\'t suck air into the hoses - have a helper watch the fluid level in the master cylinder and the bubble production. The fluid level should not sink during this procedure - if it does, then you may have a faulty master cylinder. Pump until you have no more bubbles. If the bubbles don\'t stop, then you have a faulty master cylinder.

Hope this helps!!

Dec 01, 2013 | 1995 Chevrolet K1500

1 Answer

My break fluid is just disappearing all of a sudden, why?


Don't you have a puddle on the floor somewhere? If you are going through that much fluid you should see it somewhere. Maybe even leaking through the firewall and onto the floor, which would indicate the master cylinder is bad. Look under vehicle, and at every wheel you should be able to find something that is wet. If it is none of that, is the engine smoking all of a sudden? Maybe it is getting pulled out through vacuum by the brake booster? Just trying to give you something to look at.

Feb 09, 2012 | 2002 Ford Escape

2 Answers

I hit my brake pedal and felt it bleed off but there is not no line infraction or leaks after checkout but still having to replace brake fluid. The breaks are soft and go plum to the floor for some reason


If you are having to replace brake fluid after you've filled it and bled the lines to remove air you have a brake line leak somewhere. I suggest following the break lines (probably 2 of them) from the Master Cylinder to the ABS unit. If there are no leaks then follow the other 4 lines coming out of the ABS to their respective wheels. The disappearing brake fluid has to be going somewhere, try putting large pieces of cardboard under your vehicle to check for drips, this may help in locating the leak. Also inspect the caliper area as brake fluid could be leaking from there as well. Please remember: PLAY IT SAFE!! Don't drive a vehicle with improperly working brakes! Stopping is the most important part of driving!

Oct 15, 2011 | 1998 Lincoln Town Car

1 Answer

I installed new rotors and new pads but my break pedal is to goes to far down when you press the pedal, can i adjust the break booster


You need to bleed the brakes. Sounds like you have air in the lines. Make sure to keep the reservoir full when doing this, also check for leaks at the Master Cylinder to make sure that you are not leaking fluid anywhere.

May 19, 2011 | Dodge Ram 1500 Cars & Trucks

3 Answers

My brakes are going to the floor


Hi, the likely cause is a leak that has used all the fluid in the reservoir and drawn air into the system. You will need to find the leak, repair it, and then bleed the whole system of air. Likely places for the leak are at the back of the master cylinder or at any of the 4 wheels. It is possible to draw air without a leak if your front brakes are extremely worn. If this is the case, replace the front brake pads and bleed only the front wheels. Please let me know if you have questions or need instructions, and thanks for using FixYa.

May 09, 2011 | 2005 Dodge Neon

3 Answers

Clutch pedal goes to the floor, will not release the clutch


Hello Henry.
There are a couple of possibilities.
First of all, check the fluid level in the reservoir under the hood. It is mounted on the firewall opposite of the clutch pedal. Remove the cap and pull the rubber boot out to fill it (with brake fluid ONLY!).
If it is empty there is a leak. It is usually one of two places. The master cylinder or the slave cylinder.
The master is mounted to the firewall and has a piston in it that pushes fluid through a line to the slave cylinder that is mounted between the engine and transmission.
Look for signs of fluid leakage and that will generally tell you which one needs repair.
The master on the firewall will usually leak on the inside of the truck where the rod from the clutch pedal goes to it and the slave will usually drip out the front of the transmission.

Hope this helps you to repair your Ranger.

Oct 16, 2010 | 1997 Ford Ranger SuperCab

1 Answer

Experienceing loss of power to brakes


1. What is the Brake Fluid Level?
2. Are you losing any Brake fluid at all? Are there any puddles or noticeable wetness on the ground or on the tires/wheels? With vehicle parked, the reservoir filled (overfilled), and engine running: pump the brakes and check on the ground and back sides (inside portions) of the wheels. Look for any brake fluid leaks.
3. Leaks from Calipers usually means a leak from the caliper piston. The rubber seals will be wet.
Leaks from Drums usually means a leak from the wheel cylinder.
4. In any case of leaks from the wheels - replace the calliper OR wheel cylinder.
For caliper leaks: change the brake pads, and clean the rotors with brake cleaner.
For drum leaks: clean the drum and brake hardware with brake cleaner, and replace the shoes.
5. If no leak is detected from the wheel area's: check under the Master Cylinder for wetness indicating a possible leak.
6. If no leak can be found: you MAY have a rear seal leak in the Master Cylinder which is pumping Brake Fluid into the Brake Booster (that large disk looking thing attached to the fire wall, attached to the Master Cylinder in front).
a. Use a large drip/catch pan under the Van in the area on the Master Cylinder.
b. Disconnect the brake lines from the Master Cylinder using a flair wrench.
c. Remove the two nuts (12 or 13mm?) attaching the Master Cylinder to the Brake Booster. If you have been using a lot of fluid, and have found no leaks, here is a good possibilty that all that brake fluid has collected in the Booster; so when you detach the Master Cylinder from the Brake Booster, all that fluid will come rushing out!
7. If there is Brake Fluid inside the Brake Booster: there is no cleaning that out. Brake Fluid is very caustic to the seals inside the Booster and should be replaced.
8. Of course the Master Cylinder will also have to be replaced.
9. After replacing the Master Cylinder/Brake Booster - make sure you get all that spilled brake fluid off the engine compartment area parts! I use a brake cleaner, then mild soap and then water to rinse. Clean any Brake Fluid off Paint imediatley as it will quickly dissolves finishes and paint.
10. If no leak is detected and the Booster is clear, there may be problems with the Booster One-Way Valve. This is attached to the outside of the Booster and has a hose from an "advance" connected to it. This maybe malfunctioning where you are losing power. Replace this first before deciding to replace the whole booster (in cases of NON-LEAKS ONLY). If that did not work, there may be inner seals inside the Booster that have failed. That means a new Booster.
11. In any of the above cases: Make sure you bleed the Master Cylinder correctly and bleed the brakes (at each affected wheel) correctly. Any air in the brake lines will decrease your braking proficiency or could result in brake failure.

Let me know if this helped or if you have any additional information or questions. Feel free to contact me at FixYa.com!

Dec 10, 2009 | 1999 Dodge Caravan

1 Answer

Constantly refilling brake fluid reservoir, can not find leak


this is not an uncommon problem.
if you are certain there are no fluid leaks anywhere in the system then look here.

the master cylinder is mounted to the power brake booster there are probably two or three nuts holding them together, remove these nuts and pull the master cylinder forward, now look in to the front of the power booster with a flash light, if you see any signs of brake fluid there than your master cylinder is bad. you want to correct this soon because that fluid is being sucked into the egine and through the combustion chambers. you should replace the power booster as well because it will be contaminated, although you can reuse the power booster untill it fails, i believe there is a gasket or o-ring in between the master cylinder and power booster aswell, make sure you look for it and dont leave it out.

good luck

wesleyschacht@hotmail.com

Jun 14, 2009 | 2000 Kia Sportage

1 Answer

E break light is on and break locked up


try this. loosen the two brake lines at the master cylinder so some fluid can excape, if the brakes are now freed up you have a bad master cylinder. look for a swollen rubber seal on the master cyl.cap also. this indicates some wrong type of fluid has been added causing the problem. good luck.

Jan 15, 2009 | 1997 Ford Expedition

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