i have a 91 civic si hatch and my brakes are screwed up. i can push the pedal while the car is off and get pressure but when i crank the car, i dont have any pressure at all. i just change the master cylider thinking it was a seal or something and am now only assuming that its the Brake booster but would like further input before i replace something i dont need to. i also tried bleeding my rear brakes and broke off the nipple for the one of the bleeders (rusted piece of ****) and almost rounded off the other side. i can still bleed my front brakes and have blead the living crap out of those two trying to get the air out of the system without bleeding the back. any suggestions would be useful.

 

any help would be good, thanks.

 

bump... for some help pleas

 

you have to bleed the rear or you're going to have no pedal

in the future what works really well for stuck bleeders is to heat them up really hot and then pour water on them. the quick change in temperature from pouring the water on them breaks up the rust

 

is there any way to bleed them without the nipples. and my brakes were doing this before i changed the master cylinder. it completely lacked pedal before i opened the system. and i do have pedal pressure while the car isn't running. i lose the pressure as soon as i crank the car.

 

Unfortunately the likely scenario is that is your slave cylinder

 

i'm pretty sure my brakes don't have a slave cylinder

 

Had the same prob on my last hatchback, turns out both my wheel cylinders on the rear were blown.

 

thanks i was going to change them anyway. considering i broke the nipple off in one. do you having any tips for getting off rusted brake lines mine havent been changed in several years and the car set and rusted practically everything.