No brake pedal, not air in the system or master cylinder

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Old Oct 25, 2012 | 10:25 PM
  #11  
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Hey everyone time for an update. First off thanks for everyones help. Wednesday night we clamped the lines and had a firm pedal. this morning we ordered some brake calipers and our local auto store was able to get them by tonight. We installed them the correct way this time, thank you lwh. We did the gravity bleed then went to the manual pedal way. we got no where. Almsot gave up but decided to throw a vacum on it and see. Put a vacum on and got a good pedal. went to bleed it again and lost all pedal. did the vacum one more time put the wheels on and carefully rolled it out of the garage brakes working. went for a little drive brakes worked fine. I dont understand why the bleeding process was causing them to lose pedal though. Anyone have any ideas on this?

Thanks again especially to Camaro 69 for all his input. Ill be doing a photo shoot of the car soon and will post up some pictures.
 
Old Oct 25, 2012 | 11:52 PM
  #12  
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Originally Posted by deebsr6
Put a vacum on and got a good pedal. went to bleed it again and lost all pedal.
When you say "put a vacuum on", are you talking about vacuum bleeding at the caliper, or hooking up a vacuum source to the power brake booster. Not quite clear about what you're saying you did there.
But either way, glad you got the brakes working again.
 
Old Oct 26, 2012 | 05:17 AM
  #13  
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I have an old refrigerant pump from a fridge that my dad put together back in high school for a project. put that line onto a mason jar cover and another coming out going to the caliper kind of like a catch can. turn the bleeder and it is like a force gravity bleed.
 
Old Oct 26, 2012 | 07:23 AM
  #14  
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That's a great way to do it, hope you have your problem solved.
 
Old Oct 26, 2012 | 08:17 AM
  #15  
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So when you vacuum bled, the brakes worked fine. Follow that up with a pedal pump bleed, and they go soft?
Were you getting air bubbles out of the system with both procedures?
 
Old Oct 26, 2012 | 09:03 AM
  #16  
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Yup correct. We got a little air with the vacuum and more with the pedal
 
Old Oct 26, 2012 | 10:29 AM
  #17  
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Then you still have or had some sneaky air trapped in there. Do you think you got it all out this time?
 
Old Oct 26, 2012 | 02:43 PM
  #18  
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to be honest i dont really know. I know I can lock up all 4 wheels but I dont know if the pedal feels right. Its been so long. I know that it different then my STI but I know they are completely different cars with different braking systems.

It has a consisntant feel under light braking but under heavy braking it gets very stiff and exponentially harder to push.
 
Old Oct 29, 2012 | 11:23 PM
  #19  
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After a disk brake upgrade i could never get mine to bleed correctly until I installed speed bleeders. I tried the old pump method, pressure at the MC and a vacuum pump but no go. No clue on why.
 
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