Quote:
Originally Posted by bob8619
I noticed the fluid level in the reservoir for the rear brakes was slowly dropping so I looked everything over many many times but I find no leaks....
I started suspecting the master cylinder so upon closer inspection I noticed that the fluid in the front brake reservoir level goes up, as if the rear fluid is being forced into the front reservoir.
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Change the master. Its bad and bypassing internally. I just went through the same thing.
bench bleed the crap out of it but don't push all the way down when bleeding it. Go about half way for a while till all the air (well, most of it) is out.
When you swap out the master, after you hook it all up, open all of the bleeders and let them gravity bleed (with the cap off of the master) for a bit till fluid is running out before bleeding them with a helper.
Sometimes you gotta pump pump pump hold and open the bleeder to force crap out, but most of the time you can just open > press > hold > close.
AND the reason why it moves from one reservoir to the other while connected, and doesn't while disconnected, when connected, it builds pressure and internally bypasses, when disconnected, there is no pressure.