The brake fluid was under pressure with your foot on the pedal, when you let off the pedal the pressurized fluid is released back into the reservoir making a fountain...that's normal.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD