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First, make sure the master cylinder is filled with brake fluid. If it is low, there may be a leak somewhere in the brake lines or a brake cylinder. If the master cylinder is bad, you can normally pump the brakes up, but the pedal will slowly sink to the floor again. The master cylinder needs to be replaced or repaired.

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โˆ™ 2009-11-17 16:51:43
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Q: Why does brake pedal go to floor on 1991 buick park avenue?
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