After I changed the air filter yesterday, my Coupe suddenly didn’t want to start any more. I managed to pull off a sign of life after a quarter of an hour, but he immediately drains off, if I even look at the accelerator pedal. I have it at the moment so far that it starts completely cold at third or fourth times and slowly but safely drains. If you step on the gas, it immediately drains. If you have done this 2 or 3 times, it starts properly, without I wonder what I did wrong, it can’t be that something is broken now, I did not touch anything, only changed the air filter. Actually it should run better now, because the old one was already pretty closed. Motor is a 2L 4-cylinder 113hp MKB ‘3A’ with KE-Motronic injection (air filter as with NG under the injection system)