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new brake lines and pedal still goes to floor

This is a discussion on new brake lines and pedal still goes to floor within the Brakes/Suspension/Chassis forums, part of the W Body Tech category; I replaced the 2 lines from master back to coupling going to rear calipers thiss weekend. I replaced both calipers ...

  1. #1
    SE Level Member donalda's Avatar
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    Default new brake lines and pedal still goes to floor

    I replaced the 2 lines from master back to coupling going to rear calipers thiss weekend. I replaced both calipers in the back. I made it so the bleeder valve faces the ground. Is this ok to do? Put steel braided lines on the front calipers. we bleed the system many times. we have fluid comming out of all calipers. NO LEAKS. but my pedal still goes to the floor. I took it for a spin and when I pump the brakes to stop it gets better. when it does stop the pedal goes right back to the floor. Is there a bleeder valve around the master cylinder? I am not sure what else to check. Starting to get to cold to keep riding my motorcycle. please help.

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    Moderator BillBoost37's Avatar
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    Default Re: new brake lines and pedal still goes to floor

    When the bleeders face the ground, fluid flows in and directly to the bleeder, leaving the caliper piston area full of air. You need the bleeder to be higher than the hose for your calipers to bleed properly. They should not work right until you correct that.


    If Dave feels 60% throttle is 100%, what does he tell his wife.

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    GTX Level Member BlackGT97's Avatar
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    Default Re: new brake lines and pedal still goes to floor

    there are also 2 bleeders on the master cylinder (on the 97 anyway)
    1997 Grand prix GT Black Coupe- The beater
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    I live here. dsmuts's Avatar
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    Default Re: new brake lines and pedal still goes to floor

    bill is right flip your calipers back over and you'll be fine
    98 GTP 230K miles scrapped
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    SE Level Member donalda's Avatar
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    Smile Re: new brake lines and pedal still goes to floor

    GUYS that helps me out more than you know. thank you very much

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    GT Level Member 98GPGT2D's Avatar
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    Default Re: new brake lines and pedal still goes to floor

    Like everyone else is saying, your bleeder screw needs to be on the highest part of the caliper resivoir, so that all the air can be properly evacuated when bleeding.... Fluid is heavier than air, so the air is going to want to sit on the top....take a 2 liter bottle of pop and put it on its side, all the air goes to the top...the fluid and air inside the caliper acts the same way. Cant bleed the air out with the bleeder on the bottom side. Flip the calipers side for side to rectify the situation, and re-bleed.

    Im assuming you know how to properly bleed the air from the system?


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    Moderator BillBoost37's Avatar
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    Default Re: new brake lines and pedal still goes to floor

    PS..calipers also say R or L on them typically.

    (F body upgrades go on backwards)


    If Dave feels 60% throttle is 100%, what does he tell his wife.

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    SE Level Member donalda's Avatar
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    Default Re: new brake lines and pedal still goes to floor

    the rear calipers did not say a certain side. But I switched them last night and it stops real good now. Steel braided lines are the best. Thanks for all your input and advise on helping me with this. GOOD LOOKN!

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