1992 Mazda B2200 Air in Brakes

Tiny
ANNA LAINYA GRAY
  • MEMBER
  • 1992 MAZDA B2200
  • 4 CYL
  • 2WD
  • MANUAL
  • 178,000 MILES
There is not a leak to be found anywhere but air keeps coming into the system from somewhere. You can hear the air at the drivers side rear wheel. Only the back brakes seem to be affected. What could be the problem?
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Sunday, January 18th, 2009 AT 2:01 PM

3 Replies

Tiny
JAMES W.
  • MEMBER
If you have air in the brake system, you shouldn't be able to hear it. Have you tried bleeding the rear brakes to see if there is any air in the wheel cylinders? If you have air going in, you should have fluid coming out somewhere. Is there any evidence of fluid leaking down under the dash by the brake rod going through the firewall? Please advise
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Sunday, January 18th, 2009 AT 10:01 PM
Tiny
ANNA LAINYA GRAY
  • MEMBER
Yes we have bled the back brakes. The air can be heard at the back drivers side when the tire is off and the brakes are pumped up. We just replaced that cylinder and it did not help. Probably spent a half an hour trying to bleed the air out of the system and it was not getting any better. Any ideas?
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Sunday, January 18th, 2009 AT 10:20 PM
Tiny
JAMES W.
  • MEMBER
Sometimes, by pumping the pedal, you can't move the fluid through the system fast enough to force all the air out. Gravity is fighting you and can keeps the air moving up. You may have to pressure bleed the system.
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Sunday, January 18th, 2009 AT 11:00 PM

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