greg ... 11/13/2011
1998 Mazda B2500 SE 4 Cyl 2.5L
no brake pressure, fluid on driveway
stopped truck, turned off, placed foot on brake pedal and went slowly all the way to floor board. looked underneath and saw fluid but could not tell where the leak was coming from. is this the master cylinder?
Probably have a rusted through steel brake line. Has to be repaired using steel line and flare unions. Not a DIY job unless you are very mechanical. Its not the master cyl so don't buy one.