[Omega A 2.6i] Help – my fat guy is jerking!

Hello together. Have problems with my Omega A 2.6i. And indeed the good guy is quite strong, he has problems with the gas acceptance and of course does not bring the full power. In the cold condition the problems are quite clear, with increasing engine temperature the symptoms decrease, also at high speed. Nevertheless, even with warm engine you have the feeling that there is something wrong. Finally the consumption has probably also increased and lies at about 15l, in the normal case I come I can’t remember the whole gas orgy in the city. Anyway, it was no more than usual. The Lambda probe was renewed about a year ago, the jerking does not disappear even when the probe was pulled off. I also mean to remember that the probe does not regulate anything when the engine is cold. So the Lambda probe probably disappears. I also had the distributor cap off. It seems to have come anew, as does the runner. Is the optical impression good and (for the time being) also eliminates as a source of error. What does this still come into view or what is a hot tip? Air quantity meter? Ignition cable, ignition coil, spark plugs? So experts, let’s get to the keys. The thickness is by the way no grotto: 150tkm down, up to 125tkm checkbook, afterwards maintenance in free workshop, TÜV/AU just new. By the way, I’ve been in the KLR for over a year, he has never made problems. And no, it’s not Omega B, although i I’ve got him in the avatar.