seiferzero Posted September 13, 2017 Share Posted September 13, 2017 So I have a 1975 280z that if I turn it on and let it sit it idles just fine, but as soon as I press the brakes it starts to idle very roughly and if I hold the brake down long enough without stepping on the gas it eventually just dies. Anyone have any ideas they could maybe help me with on this? Quote Link to comment Share on other sites More sharing options...
beermanpete Posted September 14, 2017 Share Posted September 14, 2017 The MasterVac is likely leaking when you press the brake and causing a vacuum leak. Quote Link to comment Share on other sites More sharing options...
seiferzero Posted September 14, 2017 Author Share Posted September 14, 2017 And by MasterVac you mean the brake booster? Quote Link to comment Share on other sites More sharing options...
torynich Posted September 14, 2017 Share Posted September 14, 2017 Yes, the brake booster. Quote Link to comment Share on other sites More sharing options...
beermanpete Posted September 15, 2017 Share Posted September 15, 2017 17 hours ago, seiferzero said: And by MasterVac you mean the brake booster? Yes, the brake booster. Quote Link to comment Share on other sites More sharing options...
seiferzero Posted September 19, 2017 Author Share Posted September 19, 2017 Yup, it was the brake booster. Replaced it and everything is good now! Thanks guys! 1 Quote Link to comment Share on other sites More sharing options...
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