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FD issue bleeding the brakes

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Old 04-12-11, 02:12 PM
  #27  
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ok, sounded like you've bleed that RR wheel really good when you have a constant stream of fluid coming out.

To test if the calipers are getting stuck, pretty much have someone hold pressure on the pedal and check spin all wheels to makes sure they are holding and not able to hand spin it.

After that, have them release the brake pedal and hand spin each wheel/tire. The wheel and tire that have a drag or takes extra effort to turn by hand is probably binding or getting stuck. Remove caliper and clean it and retract the piston put a piece of 4x4 wood in there and have another person press on the pedal. It would move out smoothly and retract smoothly. If not, then you caliper might need a rebuild, or piston removed to be clean and free.

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Old 04-13-11, 11:38 AM
  #30  
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Originally Posted by mr2dude9161
So i spoke to some one and they told me that it could be my brake booster being bad and leaking air back into the system. Not sure how that could be possible.
Actually the brake booster does not leak air back into the cylinder. It is impossible. Go talk to someone else whose more mechanically knowledgeable =].

If a brake booster leaks air, you will have very little assist but not air back into the MC.

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Old 04-13-11, 02:51 PM
  #32  
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Question

Did you rebuild the master cylinder, or did you purchase a new one?
Old 04-13-11, 04:28 PM
  #34  
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Question

Originally Posted by mr2dude9161
Bro there is a guy locally that can get me an OEM MC for 134 from a Mazda warehouse. The rebuild kit anywhere i called was around 100 bucks. I rather get the whole thing for a little extra cash
So this is still the same MC from when the previous owner put in the wrong fluid?
Old 04-13-11, 07:36 PM
  #36  
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Replace it.
Old 04-13-11, 10:01 PM
  #38  
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replace the master and do the old school brake bleed method using tubing and a clean container, it is called the one man brake bleed.

connect the tubing to the bleeder, must be a tight fit on the bleeder or it will not work. place enough new brake fluid in the container to cover the hose. open the bleeder and start pumping the pedal slowly. make sure the master level stays up as this process moves the fluid from the master to the container at the caliper. continue until no more bubbles are coming from the hose in the container. close bleeder before removing the hose and move to the next caliper. continue process on all four, rr,lr rf,lf. you have just completed a complete air free brake bleed. remember Do not put the fluid from the container back in the master, it will contaminate the system no matter how clean it looks. been doing it for years, works with one person or two. give it a shot with a new master, should cure all your problems


Joe
Old 04-13-11, 11:56 PM
  #39  
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By the way where did you buy your MC from? Not sure if you know, but any time you need to replace a stock part on your FD give Ray Crowe a call 888-533-3400 (Parts manager @ Malloy Mazda in virginia). Great prices & fast shipping.
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