Hello Have since the beginning of this winter the problem that after a short driving time the engine power decreases, that occurs when the engine has a temperature of 40 – 60 degrees, then it runs again perfectly. During this period it also starts hard, it is immediately there but you notice how one cylinder after the other gets first ignition or Kraffstoff! The engine really loses! And ignites also back in the intake manifold! (I do not know how long the KSV work but from one second to the a It is certainly not completely impossible to exclude false air! Compression is top up to the 5cylinder but that is actually normal with the engine anyway. At 500,000KM this may be the case ZK picture is also in order, as well as the ignition and the fuel pump and filter! Also the Temp sensor was renewed 3years ago Original at Audi! I raised petrol pressure about 2years ago, but should not be important. Do you have a tip for me? Think already slowly about the Po But I can’t imagine it either! I am grateful for every tip and help! LG Sascha and sry because of the spelling errors.