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Thread: Bias box multiple problems

  1. #41
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    I haven't got my car ATM to compare but it looks like the cylinder on the left is moving too much ,maybe indicating air in this circuit I would try manually bleeding both circuits at the same time and this way you will make sure both cylinders are moving fluid

  2. #42
    Senior User Iain's Avatar
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    Yeah weird as the pedal is nice and firm but I think another re-bleed is in order. Hopefully an easy fix then!

    I'll re-pressure bleed them as manual bleeding is tedius.

  3. #43
    Senior User Iain's Avatar
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    Having read about 'bench bleeding' new cylinders to remove air, I think I'll do the manual pedal bleeding to try and exercise the cylinder.

  4. #44
    Go low or Go home. Moderator Benn's Avatar
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    I was only thinking if the fluid wasn't moving thru it enough when move with ya foot. As you pressure bled it.
    All I wanted was a Pepsi, just one Pepsi
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  5. #45
    Senior User Iain's Avatar
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    The issue was air trapped in the cylinders from pressure bleeding. Wouldn't have had the issue with brake pedal bleeding, or 'bench bleeding' them first (look it up, it's a common thing to do apparently)

    I looped the cylinders back on themselves, filled with fluid, and pumped the pedal lots of times so the cylinders were only full of fluid. Then reconnected the lines and pressure bled as before. Barely any travel on the cylinders now, so sorted.



    Just the pedal ratio to look at now...

  6. #46
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    I only ever pedal bleed so can understand why its happened but havent ever had that issue..

    Paul..

  7. #47
    Senior User Club Member MARTIN KELSON's Avatar
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    Glad you're getting closer mate.
    Double check that ratio & you should be there.

  8. #48
    Senior User Iain's Avatar
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    Quote Originally Posted by MARTIN KELSON View Post
    Glad you're getting closer mate.
    Double check that ratio & you should be there.
    Yep definitely needs the ratio looking at like you said. My foot hurt from standing on them!

    Total revamp of the corsa set up to lengthen pedal and move linkage bar and should be better.

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