Broken Brake lines repaired at back end of truck. Lines no longer lbroken or leaking. Lines bleed 6 times. When truck is running brakes need to be pumped up every time to stop truck. New master cylinder put in still same thing happening. Brakes were bleed at least 6 times to remove air. Master cylinder filled to mark. When truck is off brakes are pumped and no compression is lost. Once truck starts and vacuum kicks in then the pedal goes to floor and then you need to pump pedal every time you want truck to brake.
Sep 16, 2010 at 9:55 AM