Thanks for the resopnse. The calipers on the right side were seized so I took them off and fixed them and regulated the clerance and everything works fine except the pedal still falls in the floor and braking force is very weak. Do you have any idea how could I fix this without changing brakepads? mine idea is to shorten the bar that goes from the pedal to that thing that connects to rods from brakes an make the bars that go to the brake calipers longer by unscrewing the connectors a little. What do you think about that will it work properly?