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Brake Problem need help!

905 Views 10 Replies 5 Participants Last post by  TiminMb
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Hey guys, I've been having this problem off and on. When I'm out wheelin just crawling around I lose my brakes on inclines. They just sink right to the floor boards. A couple pumps and they are back to normal. On the highway and city they work fine, I've blead the lines a ton of times and the M/C as well with the 2 tubes going back into the resivior. Any Ideas?
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I'd suspect the master cylinder. Severe angle or not, the piston bore is full of fluid at rest and will work fine for a single stroke. If the piston is dropping, somehow fluid is being bypassed or air in the lines being compressed. Considering this doesn't happen all the time, I suspect it's not air. Master cylinders are cheap enough to swap in a new one. There is a longer pressure holding demand on the system when you rely on the brakes to hold you on an incline as opposed to just stopping. Any leakage at the master cylinder would be more critical and show up. Still, this is just a guess.
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