having trouble with brakes

[240swapman]

i replaced my brake pads and one rotor and bled down the system all of a sudden my brake pedal started going to the floor so i replaced the master cylinder and bled the master cylinder and the system but the pedal still going to the floor does anyone know what it could be please help?

thanks

[bj180sx]

well did you bleed the rears too. Also is it abs equipped? If so bleed the abs unit. Might have alot of air in the lines. Check calipers for leaks. Goodluck.

[slw240sx]

just had this prob myself, i was straped for time when i changed fluids, and i got massive air trapped in it. well i ran through two of the big bottles of fluid, and still no luck getting the bubbles out so i had to drive it for the last two days with no brakes ,and i deliver pizzas 10hrs a day, boy was that a fun time!!! well i bled the system 4 or more times still no luck my friend said i prob blew out the master with my technique... but i had this handy little tool sitting in one of our cabinets, a vacumn pump used to bleed brakes.... stick it on the bleeder valve pump it 15 times, and crack the valve open ..pssst .. did this more then 4 times on each wheel and finnally fluid was comming out , took me,i know, its sad but over 2 hrs of this to vacumn all that air out ... now my brakes are better then i have ever had them !! now if only i could get a chance to work on my Ca18det

Jon

[240swapman]

hey where did u get the vacuum bleeder thing

[i2ice4m3]

do u have a helper to bleed your brakes? if you dont it's impossible without a Speedbleeder or something.

[240swapman]

yeah i have a helper but we have bled and bled and it makes no sense why my brakes are doing this stupid crap

[i2ice4m3]

What brakes do you have on the car? When i did my z brakes, i installed the left one on the right side, and vice versa. The calipers are identical, with the exception of the bleeder screw. Installed properly, the bleeder screw is on top. The way I installed it, the bleeder screw was on bottom. This meant brake fluid bypassed the entire top half of the caliper and I couldn't bleed the system. Maybe something similar is happening. Hope this helps and good luck!

[slw240sx]

autozone sells the mittyvac pump for 15 bucks i think, it was by the compression checkers and dent pullers steering wheel pullers and what not

[240swapman]

thanks i am going to napa tomorrow to get another differet master cylnder insted of discount auto parts i had a mechaniclook at them today and he says it is possible to get twodefective master cylinders in a row cause he said all the signs lead to the master cylinder

[Silvia2b]

Other than bleed did you do anything to the rear calipers? when bleeding your brakes on a NON- ABS system, always Start with the one furthest away from the master cylinder. Then work you way closer. hope you get it figured out driving with out brakes is pretty dangerous especially to your precious Pizza cargo!