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don

don 4/14/2010

2008 Mazda CX-9 Grand Touring 2 Cyl 0.4L

Brakes

have a problem with loss of brake fluid; dealer does not find a leak. could there be any other source of loss ?

3 Answers


Nissan Technical Advisor

I highly recommend to check again the leaking issue with other workshops.

You can use the “Find a Shop” feature of AutoMD for shops nearest you.

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Bender

Bender 2/14/2011

Since i dont really trust the stealership, ill check it again myself, good thing i have this link to share

http://auto.howstuffworks.com/.../...g-brake-fluid.htm

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deanb

deanb 2/14/2011

On vehicles using vacuum assist brakes, if the rear seal(s) on the master cylinder are leaking/defective the result can be brake fluid loss through the brake booster vacuum. Although uncommon, no leaks will be noticed as the brake fluid is sipped out via the booster vacuum source and burned via the intake and out the exhaust. A quality shop should have checked this for you.

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