Indey Posted September 13, 2010 Share Posted September 13, 2010 I have a 76 280Z, and today when I went to move it into the garage, the brake pedal basically sunk to the floor, and only the very last bit of pedal space, would allow the brakes to be used....very slightly . I checked for leaks everywhere, and I have yet to find one. There is fluid in both reservoirs of the master cylinder, and it is a brand new master cylinder. I also tried pumping the brakes with the car off to see if the pedal would build pressure, and it did not, it would just continue to pump and never stiffen up. So does this sound like a bad brake booster? Quote Link to comment Share on other sites More sharing options...
Mike kZ Posted September 14, 2010 Share Posted September 14, 2010 Sounds like a bad master cylinder. Did you bleed the master before you put it on? Quote Link to comment Share on other sites More sharing options...
deja Posted September 14, 2010 Share Posted September 14, 2010 When I have issues like this I always ask "what's the last thing I did". You just installed a "new" master cylinder, that's what I would look at. You wouldn't be the first person to get a bad "new" mc especially if it is a rebuilt unit. Quote Link to comment Share on other sites More sharing options...
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