Question about 2000 Kia Sportage

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Constantly refilling brake fluid reservoir, can not find leak

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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

Posted on Jun 14, 2009


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Posted on Jan 02, 2017

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SOURCE: Brake fluid leaking from master cylinder Reservoir

solve the problem by replace or rebuild the master cylinder. This happens over time.

Posted on Jun 30, 2010

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There is water in my brake fluid resevoir why and what do i do

The braking system is fully sealed from the brake cylinders to the servo, so the only place water could have got in is from the cap on the reservoir.

Ideally, you should replace all the fluid by draining the system and refilling it. What you may be able to do though is suck all the water and fluid out of the reservoir dry it with paper kitchen towel and refill the reservoir it with fresh fluid.

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How Do I stop a leak from the Brake Fluid Refill Cup?

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The front portion of the reservoir has fluid used for the front brakes which provide the majority of the vehicles stopping power. There is a valve that is supposed to shift to isolate the front and rear brakes when this occurs but it doesn't always work as designed. You have lost all the fluid in the front brake system. This is due one of these possible issues:

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1 Answer

I need to top up the power stering fluid and need to know what tipe to use 1988 chevy silverado C3500 454 The power steering looks like it is incorperated into the brake booster

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The reservoir in front of the brake booster is the brake master cylinder reservoir. To refill, use standard brake fluid. If it the truck is using brake fluid, check for leaks at the back of the master cylinder and at all wheels.

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