Guest Anonymous Posted February 11, 2003 Share Posted February 11, 2003 My 77 z sat for a year without my attention. I recently opened up the master cylinder and noticed that the fluid was almost gone and what was left on the bottom was a thick sludge. I tried just filling it back up and pumping the brakes but they remained soft. There was no noticable puddles on the ground, or fluid leaking anywhere. So where did my old fluid go while the car sat? What should I do next. Quote Link to comment Share on other sites More sharing options...
Guest livewire23 Posted February 12, 2003 Share Posted February 12, 2003 I have the same problem with my car, and after I brought it to the shop to have the engine looked at, they said the sludge was the master cylinder seals dissolving into the brake fluid. Nasty stuff. They say you can try to bleed that crap out after mixing in fresh fluid to dilute it. But they thought I'd probably need all new master cylinder, at the very least. Quote Link to comment Share on other sites More sharing options...
DCZ Posted February 12, 2003 Share Posted February 12, 2003 Your brake fluid is most likely puddled in the vacuum booster This will deteriorate the seals in the booster so you should probably replace both m/c and booster if this is the case. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 12, 2003 Share Posted February 12, 2003 Thanks guys. I guess its a good thing I bought that new master cylinder of ebay a while back. Quote Link to comment Share on other sites More sharing options...
Guest livewire23 Posted February 13, 2003 Share Posted February 13, 2003 lucky you! I don't want to buy a new master cylinder... Stupid money. Anyone think I might be able to flush that crap out with some compressed air and a brake bleeder kit? Quote Link to comment Share on other sites More sharing options...
denny411 Posted February 13, 2003 Share Posted February 13, 2003 As long as the seals and cups in the MC are still pliable, you could disasemble it and clean all of the parts with brake parts cleaner. Then lube everything with new brake fluid and reassemble it. OR..buy a rebuild kit and put NEW seals in it. Quote Link to comment Share on other sites More sharing options...
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