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poss. vacuum problem

Discussion in 'Chevy Trucks' started by haulinbass, Mar 4, 2000.

  1. haulinbass

    haulinbass Guest
    Messages: 0

    my dad is having som trouble with his 77 chevy. it has a rebuilt 350 in it and it all of sudden started missing real bad and had a loss of power and the brakes are not working. he thinks maybe some sort of vaccum problem as it burnt one of the hoses. thanks for the help..h-bass
  2. John DiMartino

    John DiMartino PlowSite.com Veteran
    Messages: 2,154

    If the booster unit has vacuum to it,check by pulling it off whil its running,it should stall or suck real bad,the Brake booster is bad.They run around 100bucks and its common to need one by now.They dry rot and some fuel vapors always make there way to the diaphram,even with the valve inline to stop it.The vapors swell the diaphram and it fails eventually.A backfire when your foot is on the brake can blow it out too,if its in borderline condition.Good luck,and <p>----------<br>John D<br>