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My brake pedal goes to the floor will not pump up at all and it has no brakes at all either. I have bleed all the lines and master cylimder multiple times and still same outcome. What is it that could be causing this?

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  • Cars & Trucks Master
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Posted on Jul 17, 2013

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Tech Jenkins
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SOURCE: 1999 GMC Sierra brake problem

When you change the master cylinder it is best to gravity bleed first, then proceed to the pedal technique.

Gravity bleeding is when you just open the valve and let gravity pull the fluid down.

Keep in mind you must "prime" the master cylinder first before installing it, did you do that?

Priming the master cylinder is where you put it in a vise gently, you then take apaptors and screw into the outlets, then take tubes from the adaptors back into the resoirvor. You fill the resorvoir up with fluid and take a 3/8 extension for a socket and push the piston in and out slowly until there are no more air bubbles.

After this procedure you gravity bleed the brakes, then go on to the pedal technique.

Posted on Sep 04, 2008

  • 1779 Answers

SOURCE: bleed brakes but no pedal

Good! You bled the master cyl. before installation! The proper order of bleeding the lines, is to start with the wheel the greatest distance from the master cylinder. Then work your way to the next greatest distance, and last, the closest wheel. Make sure all air is removed from the lines before you proceed to the next wheel, and frequently check the master cyl. level, because, as I'm sure you know, if you **** in air at the master, you have to start all over again. I'm assuming you don't have a power bleeder, so with a helper do this with car running (make sure it's on safety stands and not going to fall on you!) Pump pedal 3 times, no need to mash the pedal into the floor, just 3 pumps 1/2 way down, hold 3rd pump at half way down level while bleeder is opened, when flow is about to stop at bleeder, close bleeder and repeat til no evidence of any air. Let me know how it goes and if you need any help.

Posted on Apr 21, 2009

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1 Answer

How do I fix the brakes in my 99 Toyota Corolla? I have no brakes and the pedal goes right to the floor.


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must be something you have overlooked. clamp off the front brake hoses and rear hose. if you dont have the propper clamps use g clamps or locking pliars. try the pedal then. if it still goes to the floor its either air in the lines or the master cylinder is no good..Bleed the master cylinder at the lines first,then work back.

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