ok i recently changed my pads rotors and lines. get everything back together and bleed the brakes. the pedal pumps up but if you take your foot off for 5 seconds the next time you push it, it go's straight back to the floor and you have to pump it up again. i bled it and bled it for 2 days, same BS. so i bought a new master cylinder........ just installed new master cylinder and its doing the same ****. its not the booster, and now i can honestly say its not the master cylinder. i am completely out of ideas. anyone have any suggestions????????

 

How did you bleed your brakes?

 

+1 howd u bleed your brakes? started from the furtherest point to the closest? def sounds like you didnt bleed it correctly or their is a leak somewhere..

 

+1

Also, did you bench bleed the master before installing? I would make absolutely sure you don't have any leaks before you bleed the system again.

 

yeah started from right rear. there are no leaks. and i have bled it so much that there is nothing but new crystal clear fluid coming out im just

 

Are you using a power bleeder or someone stepping on the brake pedal?