Hello dear community, have the following problem: have a 2liter mazda 626gd bj 91. before a few weeks was changed with me the brake fluid, because I no longer sprayed any brake pressure. it was air in it. after the change everything was ok again, but after all I kicked again into the bottomless. the lines are all ok, and all screws are also tight. if I now brake only the wheel at the front right. if I then start to pump I have the full brake force again on al le 4 wheels. now my question is, what is the problem, the brake fluid level is ok, the brake blocks are almost off, but it can’t be because the brake circuit is a closed system or????? Help me please….