Can you describe what is happening?

Answered by Jacobandnickolas (expert)
57,318 answers provided

The truck does not stop when the brakes are applied. The pedal goes to the floor. It will pump up to about half a pedal with 3 or 4 pumps, but will go back to going to the floor after less than 30 seconds. The pedal goes to the floor rapidly with no resistance.

Response from iammonku
1 question asked

Something in the MC is bypassing (even though it is new) or you have a rubber brake hose that is expanding. Also, make sure the rear brakes are properly adjusted and the brakes were properly bled. check for any leaks too expecially the flex hose to the rear axle.

Answered by Jacobandnickolas (expert)
57,318 answers provided

Thanks. Will do as you have advised and then get back to you.

Response from iammonku
1 question asked

Let me know what you find.

Answered by Jacobandnickolas (expert)
57,318 answers provided