My brakes are starting to scare me. Any help?
 

The problem is that i can pump them up and hold steady pressure and they will eventually fall all the way to the floor. No leaks, fresh pads and decent fluid. So what is happening? I understand how it works just not this.

are you back in wv working yet

Soon i hope. you know about this brake problem?

brians shop would know.

wheel cylinder

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pull the rear tires off and pull the drums.... bet u have a leaker:argh:

ya either a wheel cylinder or maybe there is an issue with your hydroboost? Are the vac lines all good?

could be problem with the internals of the master or rear brake cylinders

What the hell is a "hydroboost"? Hydro would mean water, so I don't get it.

Anyway, sounds like a leak somewhere. Did you bleed the brakes lines (get any air out of lines)?

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Well, here's an article that explains "hydroboost": Installing A Hydroboost Brake System on a Chevy

me and my brother checked lines, mastercylinder, front leaks and rear. Found nothing. must be something internal.

You sure you checked the master cylinder and not just the brake fillup? I'm pretty sure '96 had hydroboost