Question about 1988 Audi 80

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Losing some brake fluid; need to top up every fortnight. Where should I look for leak?

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Look at all wheels & master cylinder for weapage
if its bad youl see it if not take off wheels & inspect discs & wheel cylinders [rear drum brakes]

Posted on Jul 17, 2009

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1 Answer

Jetta 2002 losing brake fluid


If there are no obvious wet spots under the car then look at the master cylinder. The seal on the master cylinder can leak and the fluid will be taken into the engine by the power brake booster The vacuum hose to the booster will provide a path to the intake manifold where the fluid will be burned by the engine.

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Losing brake fluid


if you have no indication of a brake fluid leak then you may have a bad master cylinder that has an internal leak that is losing brake fluid and being burnt (sucked into engine)by way of the power brake booster. if you undo the master from the power brake booster and move it ahead enough to see if it is damp were it bolts to the booster then you have a defective master cylinder.

Mar 06, 2014 | 1999 Nissan Maxima

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When at a stop the brake will slowly start to cave in


Could be air,starts leak,master cylinder.

Feb 12, 2013 | Cars & Trucks

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91 Nissan Pathfinder losing brake fluid & has no


If the fluid level is going down then you do have a leak.

Jun 27, 2012 | Cars & Trucks

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Brake pedal goes nearly to floor I can hear noise like air escaping


If u have not lost ne brake fluid then its ur master cyclinder under the fluid resevour only two bolts and the brake lines if u r losing fluid wouldnt always c if drum brakes can,leak inside the drum its called a wheel cylinder really depends on if losing fluid?

Jun 21, 2012 | 1988 Ford Escort EXP

1 Answer

My brake light has gone on and stayed on twice in the past three months. When I take it to the garage, they add brake fluid. Why does the car seem to be losing brake fluid?


well if you are losing fluid you definatly have a leak as brake fluid is not a "topping off fluid". you could have a leaking master cylinder either externaly which can be seen on brake booster or it can be leaking into the brake booster filling it with fluid. other than that you also may be leaking from your brake hoses(one hose at each wheel), calipers(front wheels and rear if all wheel disc brakes), wheel cylinders (if you have rear drum brakes), or metal brake lines due to rust and corrosoin (run from master cylinder to each brake hose). please rate 4 thumbs if helpful.

Dec 31, 2010 | Pontiac Vibe Cars & Trucks

1 Answer

Install new brake pads and rotors all 4 wheels. Replaced front 2 calipers. Bled brakes. New clean fluid coming out. pedal is still soft and goes to floor. 200 Seebring.


Are you losing any Brake Fluid? Is it visible anywhere at the four wheels? Is it visible anywhere else?
The Master Cylinder may be defective. When you bled the Brakes did you maintain proper Brake Fluid Level in the Master Cylinder? If you didn't: and air entered into the Master Cylinder there maybe air within in the system in the Master Cylinder. You can bleed the Master Cylinder by removing the brake lines, adding more fluid, pumping the brakes, bleeding the air out of the system.
Are you losing Brake Fluid and can't find a noticeable leak? Then there is a good posibility that the rear seal in the Master Cylinder is leaking and the Fluid is going into the Brake Booster - which is the large wheel shaped drum located on the fire wall. In this case both the Brake Booster and the Master Cylinder will have to be removed and replaced. The Booster contains seals that Brake Fluid is very caustic to and will ruin these seals- causing future failures.
If no Brake Fluid is lost, no leak found: Check the Brake Booster Vacuum Advance. This should be connected to the outside of the Booster, attached to a hose, with the hose going to the engine. Check to see if this is working properly. Replace if needed.

Dec 31, 2009 | 2002 Chrysler Sebring

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

Losing brake fluid with no leaks that can be seen


check to see if brake fluid is being sucked from the master cylinder into the brake booster.

Apr 23, 2009 | 1992 Ford F250

1 Answer

Brakes will drag on passenger front and I am losing brake fluid slowly


sounds like your piston for your caliper is shot. leaking around seal onto brake pad and or ground. remove passenger tire look behind disc that is the one that will be glazed. look for wet around metal should be dry if looks like it was recently sprayed with some kinda oil its leaking. you need to replace caliper.

Apr 16, 2009 | 1997 Chrysler Sebring

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