Hello, at my Audi one of the rear brakes was changed in a workshop , because it was leaking! also equal to 4 brake lines. Now it does not brake properly anymore ! when the engine is off is immediately resistance to the pedal! when the engine runs you have to step three or 4 times until the brake pressure is there! the faster you step the sooner comes the pressure at the foot. If you step gaaaanz slowly you can step through to the end and the car pulls in one direction! have already several times en but unfortunately did not bring anything would be great if someone could tell me which part it probably disassembled! before the “reperature” everything was good