Ford Repair: 95 F250 brake trouble, ford diesel, diesel trucks

Question
I have a 95 F250 power stroke and wen the truck is running if you push the brakes they seep to the floor. I had a line brake so I replaced all of them I checked all my rubber lines wheel cylinders and calipers.I have put 3 new master cylinders on it and each time it seeps brake fluid out between the booster and the master cylinder any suggestions would be greatly appreciated.

Answer
Hi Kelly,
If the leak is between the master and booster, the master is still leaking. If you have put on 3 masters, then try a different brand, preferably from FORD. All FORD diesel trucks that use a vacuum pump have had a problem that FORD calls "step-through". The pedal sinks anytime you leave your foot on the pedal. But if there is a leak then that has to be fixed first. GOOD LUCK!!

Jeff
AllExperts