November 4, 2003my brakes just wont hold my 460 engine back at all,i have bled them everything i can think of to get them to be able to stop the truck any ideas
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November 5, 2003To check the master cylinder, disconnect the lines from the master cylinder and plug them. With the engine running, press the brake pedal (It should not travel very far). Maintain pressure on the pedal. If the pedal does not maintain its height and bleeds down, it is bad. If it stays put, it's fine.
Other ideas.... Do you have some very short gearing the brakes are trying to fight? When coming to a stop, does shifting to neutral help? Does the pedal return all the way? If not, it may not be allowing the master cylinder piston to get past the compensator port, and then as the brakes wear, you're not able to get as much pressure to the calopers and wheel cylinders. Try pulling it up all the way with your toe before braking and see if that helps (when there's no traffic around, of course).
Aside from bleeding them, was anything done to the brakes recently? Did the problem start overnight, or has it gotten progressively worse?
Let us know.
November 15, 2003tried the toe thing no difference.im going to plug those the lines like u said ill let you know