A few questions

It’s normal that the disk is at the bottom when the engine is not running and does not lift manually with the hand nix also comes from the ESV ? How can you set something there evlt? The last time it is almost due to too high co worth falling through the asu . 2.) The petrol pump does not run if you set the key on ignition , relay and pump radio , but what can be the cause there evlt be ? 3.) Something in the hydraulic system is not i.o. If the engine is off I have no brake force booster , brake pedal is immediately hard . When running it takes a time until the full braking force has been built up and you notice every pump bump in the brake pedal , besides the warning light is on . The pressure memory has been changed a half year ago , however zernix has changed ( however, art is a used one, so it can not be defective ). However, what is the same thing , which is not possible to save it , but it is not possible to use it again ?