no brakes when i apply brake pedal

1992 PONTIAC SUNBIRD
143,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
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DEBBIE GILLIT
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  • 1 POST
master cylinder is full but I hear a swooshing sound when I apply the brake pedal. Pedal goes all the way to the floor.
Aug 10, 2017 at 8:36 AM
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CJ MEDEVAC
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  • 11,004 POSTS
Every thing was fine prior to this?

Did you run out of fluid?

If my 1st question received a 'yes', w/ no fluid having been lost,

Mr. Master Cylinder's piston/ plunger seal may have tore/ wore out and it can no longer 'push' fluid, it's allowing it to pass on by the seal.

The Medic
Aug 10, 2017 at 4:21 PM