1998 Ford Explorer Brake fluid resovior emptied but no visi

1998 FORD EXPLORER
121,000 MILES • 6 CYL • 2WD • AUTOMATIC
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PHTHOMAS12
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  • 1 POST
My brakes suddenly when to he floor. I checked the brakefluid and it was near empty. I can't find a visible leak anywhere yet a great deal o fluid went somewhere. The brake fluid was checked as full just a few days before this. Is it likely that the fluid leaded into the vacume assist unit via a blown seal in the rear of the master cylinder? If so, could the fliud damage the vacume assist unit?

Thanks!
Aug 6, 2008 at 8:05 PM
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SERVICE WRITER
  • ✓ASE Certified Mechanic
  • 9,123 POSTS
  • ASE Certified Mechanic
fill it up and pump the pedal, with the engine off.

Carefully look around the inside sidewalls of the rear tires. If this has rear drum brakes, I expect a leaking wheel cylinder to be present.
Aug 6, 2008 at 8:21 PM
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