Originally Posted by
TearlessTom
That is a possibility I guess but I was taught that a master will leak down under pedal pressure slowly. This does not once it pumps up it is fairly stable. I was also thinking it may also be a frozen caliper by rusting due to the high humidity in the area. Things rust fast here.
A stuck caliper would cause the brakes to not work well but wouldnt cause the pedal to fall over time. As you can see in the above diagram once the fluid bypasses the seal there isnt anything to keep the pedal up.