Emmett316

So I have a 1991 integra ls, that I am running into a problem with. It would loose brake pressure after pressing on the pedal, so i replaced the master cylinder and now i cant get the pedal to build any pressure at all. i have tried bleeding them by the pedal method for about 5 hours the other night and I can get the front driver side and the rear passenger side to build enough pressure to spray fluid out of the bleeders on the calipers. as for the front passenger and driver rear side i cant get any fluid to the calipers and the pedal has no pressure at all. when i press the pedal down there is a groaning type noise coming from either the brake booster or somewheer near the passenger side front fender well. have any of you had this problem or are you able to point me in the right direction i dont know what to do??

NVturbo

did you bench bleed the MC prior to install?

Emmett316

yeah i did that.