brakes pedal goes to floor

[lastshot23]

problem number 1.

ok so my brakes were fine untill my mom drove it for a while with the parkingbrake on now the pedal goes all the way down before braking. i bleed the brakes and the fluid was orage and watery to i relaced all fluid in resevoir and in lines and still same problem so what do i need to fix im thinking its either the back drum shoes or the master cylinder both of which i have on hand.

problem number 2 when i bought the master cylinder i noticed that two of the places where the lines are supposed to go dont have threads for bolts and the oiginal all for have threads and in the new one only the top two and the new one came with tranfer tubes. so did i buy the wrong one or what is the problem

[sierrap615]

1. i would inspect the rear brakes.

2. doesn't sound right to me at all. maybe wrong peice, maybe a oversight in manufactioring, maybe piece isn't a direct bolton