Hello everyone I have a problem with my brakes. My car is a 2006 2.0 lsj cobalt ss. When I push them hard they will work but if I push them lightly they go right to the floor but come back up to normal position. We have bled the brakes to pure fluid. There's no leaks coming from anywhere dose anyone know what could be the problem. Or has anyone had this same experience

 

Are the pads and rotors new?

 

Yes pads and rotors are new.

 

flex lines collapsed to them maybe?

happened on my accord. caused the brakes to lock up on one side.

just a guess could cause this maybe?

 

The breaks work all around when u mash the break pedal it don't loose nothing but when u ease into the breaks it looses all holding and just goes to the floor and catches at the very end

 

Check all of the soft lines and see if they are collapsed or ballooning under heavy pressure.

If all is good look at the master cylinder

 

Soft lines? I'm fairly new to fixing **** on my own so give me some more detail plz

 

Brakes***

 

The rubber lines that go from the body of the car to the "axle"

 

^^ yea, they are probably what? 6-8 inchs long , black rubber. if your not sure wtf we talkin about, crank the wheel one way, you will see

 

I checked them they was fine I'm buying a brake booster and gonna c if that is the problem it's the only thing I can think is bad.

 

Doubt it is going to be the booster.
More likely the master.
How does your clutch feel though?

 

good way to test the booter is to pump the brakes when the key is off, the pedal should be come hard then turn the key on and the pedal should go to normal if the booster is working.