No brakes

[randbtowing]

HAs anyone had any problems with brakes? I have a 98 explorer I repalced the master cylinder with 2 from the parts store than even bought one from ford and still have no brake pedal. I have ran about 3 quarts of brake fluid through it and no air is in the system. I can pump a pedal up but as soon as it starts it goes to the floor. I have also replaced the brake booster and bypassed the abs pump with no sucess any ideas

 

[BrianDye]

I bet you have a rusted out line...it takes a little time if you do it by yourself, but park in the road or something (Or driveway if you dont care about the stains), start the truck, hold the brake pedal for a few seconds and then try to get under the truck and see if you can find the leak, OR have someone else in the truck hitting the brakes, and find out where its leaking at...