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Thread: upgraded to 314mm brakes, now no pressure.

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    Default upgraded to 314mm brakes, now no pressure.

    I've just changed the calipers, disks, pads and hoses on my 05 1.9 CDTI 150 and I can't get pressure back into the system.

    I've bled the front brakes (not touched the rears) using an Ezibleed kit and the pedal sinks to the floor. After a few pumps it firms up, then after leaving it a few seconds there is no pressure again.

    It's the same with the engine on or off. I've checked all of the joints, everything is tight and no obvious leaks.

    Any thoughts as to what could be up?

    Many thanks,

    Mark

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    Regular Member Critch's Avatar
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    Re bleed ALL the brakes
    And go from their.

    If its same clamp front flexi pipes an see if pedal stiffens up

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    Default

    Re bleed ALL the brakes
    And go from their.

    If its same clamp front flexi pipes an see if pedal stiffens up

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    Admin plasma's Avatar
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    is the pedal firm with engine off?
    Plasma's Tech2 services are now partially open and able to provide services



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    Default

    Quote Originally Posted by plasma View Post
    is the pedal firm with engine off?
    No, he said it's same engine on or off.

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    Default

    ah, my bad, in that case, bleed and bleed again, including the rears, if air has managed to work its way back to the top then the rears will need doing too..

    Silly question, are the calipers fitted with bleed nipples to the topmost of it?
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    If bleeding brakes you must as bleed front right and left rear as they are on the same circuit and then front left and rear right as if you brakes fail one circuit should still work

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    Its been a while but you should bleed the furthest away from master cylinder first and then what wayne10244 says cross bleed..i dont like these bleed tools nothing works better than the old foot and spanner trick.. Definitely sounds like airlock to me..

    Foot trick.. Two man/woman job.. pump pedal up then undo nipple while pressure is on then when pedal on floor re-tighten nipple lift pedal and repeat till no more air.. Just fluid. Hope this helps.

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    Double post bug
    Last edited by shane31; 25th November 2011 at 13:54. Reason: Double post bug

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    Default

    also if calipers are on the wrong side bleed nipple will be below the airlock thus no pressure/spongy pedal, best to check silly things first
    Plasma's Tech2 services are now partially open and able to provide services



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