91 325i brake prob - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 10-01-2008, 04:18 PM
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91 325i brake prob

about 2 months ago my brakes got real spongy.....so i replaced the fronts it no help....backs seem fine...petel goes to the floor???? it hardly stops ....i got brake fluid .....need help im confused
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#2 (permalink) Old 10-01-2008, 04:36 PM
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Originally Posted by hk30 View Post
about 2 months ago my brakes got real spongy.....so i replaced the fronts it no help....backs seem fine...petel goes to the floor???? it hardly stops ....i got brake fluid .....need help im confused
Your brake master cylinder is bad, it has an internal leak.......this is when the brake fluid leaks past the the piston because of faulty seals.....so when you press the brake pedal the fluid is not compressed & pushed out to each brake caliper, it just flushes back into the reservoir, thus the brake pedal going to the floor.

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Last edited by johnnyBgood; 10-01-2008 at 04:41 PM.
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