Lovemy240z Posted September 28, 2011 Share #1 Posted September 28, 2011 Hey guys, I'm brand new here and have only had my z about two weeks! A few days ago I was stopping at a stop sign and the brakes felt weird. I barely stopped, but heard air coming out when I hit the brakes. I parked my car and realized the RPMs were going up as I pressed the brakes. I couldn't drive home because the car would barely stop. Any help would be very much appreciated! I'm new to cars, but I have some knowledge. Vacuum leak? HELP Link to comment Share on other sites More sharing options...
Zed Head Posted September 28, 2011 Share #2 Posted September 28, 2011 Use search term "brake booster". All will become clear. Link to comment Share on other sites More sharing options...
beermanpete Posted September 28, 2011 Share #3 Posted September 28, 2011 The power brake booster has failed. Datsun calls it the "Master-Vac". Rebuilt boosters are available at most auto part stores. Typically they come with a new or rebuilt master cylinder as well. Link to comment Share on other sites More sharing options...
Jetaway Posted September 29, 2011 Share #4 Posted September 29, 2011 The power brake booster has failed. Datsun calls it the "Master-Vac". Rebuilt boosters are available at most auto part stores. Typically they come with a new or rebuilt master cylinder as well.That or a major leak in a hose/connector. My '72 Master-Vac failed a few months after I bought the car, but the symptoms weren't as immediate and dramatic as Lovemy240Z describes, and I never lost braking ability, though pedal pressure rose to an uncomfortably high level. Though if I had to put money on it, it probably is the Master-Vac. Suckers are kinda pricey though, so check for leaks first.Chris Link to comment Share on other sites More sharing options...
Lovemy240z Posted February 9, 2012 Author Share #5 Posted February 9, 2012 Sorry it took so long to reply, but Yes it was the brake booster. Only problem was the new brake booster was a tad bit bigger so I had to redrill holes in the fire wall.Thanks for the help guys, I'll definitely post more problems on here. Everyone seems very knowledgeable! Link to comment Share on other sites More sharing options...
olzed Posted February 9, 2012 Share #6 Posted February 9, 2012 Has anyone done research on boosters from other car makes that may fit? Link to comment Share on other sites More sharing options...
Yarb
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