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Old 12-05-2020, 07:45 PM   #1
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Rear Brakes won't bleed

1993 Cadillac Fleetwood Brougham

The rear brakes won't bleed the front brakes fliuds comes shooting out when bleed they're ok the brake light is on in the dash only a small amount of fluid come out the rear brake cylinders and they are new, the brake gets hard on two press but it won't stay hard the brake pedal still be moving down.

I checked the proportional valve by loosing the two fittings at the bottom of the proportional valve and i had someone pump the brake and i loosen both fittings fluid came out of both fittings i loosen them one by one and every time i loosen them the brakes was pump before i loosen them.

I don't know if it's the master brake cylinder that went bad.

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