Please help. I replaced a locked up caliper on left rear. Now even after bleeding all the breaks I pedal goes almost to floor. Blead them with trk running. Thought it might be master cylinder so replaced it.still no pedal till nearly at floor. Had mechanic bleed them through his computer and now have pedal about 2\3rds to floor. He said there is no air in the system. Please help??????

 

Does it stop the truck? Did he bench bleed the master cylinder? When I did the brakes on my mustang, the pedal was real soft for a while but still stopped the car. It firmed up after about a week.

 

Yes it stops the truck but just isn't like it should be. Yes it was bench bled.

 

If you pump the brakes does the pedal come up? If it does, you still have air in the brake lines. It cannot be that mysterious so you should be able to find the problem.