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  1. #1
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    Avid Code nightmare

    I have a trip planned for the bike park coming up this weekend and I recently bought a slightly used set of 2011 Avid code brakes. The pads are worn out so I ordered a new set and I got pads for the older model codes. Then when I was trying to bleed them i heard a little hissing sound from inside the lever. I have bled the front one three times and it is still practically mush. Could this be because I don't have new pads? Has anyone else heard a hissing noise?

    P.S. Sorry for venting I am just pissed because this has the potential to mess up my entire weekend and its the last time i'll make it up there before the season ends

    Travis

  2. #2
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    air is getting into the system somehow, whether its the master cylinder, or the lines, or somewhere in the caliper. I'm guessing thats why the previous owner sold them...?

  3. #3
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    Thats what I am thinking. Is there a way to fix it?

  4. #4
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    find the leak and plug it. spray with some dish soap-water and pull the lever- see where you have bubbles coming up.

  5. #5
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    Troubleshooting list:

    1) Check the bladder for holes
    2) Check the tightness of the compression nut (hose lever connector) and that the compression fitting is bedding properly to the lever body.
    3) Check the master cylinder for smoothness of action, leaks and condition of o-rings.

    Good luck!

  6. #6
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    what is the bladder if you don't mind me asking

  7. #7
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    Are you hearing the hissing when you're applying vacuum to the system via the lever bleed port?

    If so, I have a similar issue with my XO brakes, but I'm still able to get a good bleed by not pulling too hard on the syringe (don't create too much vacuum). Of course, if your levers are leaking more than mine, you may be out of luck.

    It seems to me the levers are more susceptible to sucking air when the system is under vacuum than they are to leaking fluid or otherwise losing pressure when the system is pressurized, which makes sense as they would have been designed to withstand much more positive pressure than negative (they still shouldn't suck air with the relatively small amount of vacuum achieved with the Avid syringes).

    Good luck,
    Pete
    I can barely get my mouth around it.

  8. #8
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    It only hisses when I create a vacuum with the syringe at the lever bleed point. Other than that the system makes no noise and doesn't leak at all.

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