Dear forum for nice holidays 🙂 So I have the following problem. I bought a Seat Arosa year 2003 with the 1.0 engine gasoline & with a mileage of 167,000km. Before that the seller told me that he runs in the stand restlessly. When I visited the car the seller told me the ignition cable, ignition transformer and spark plugs were changed and he still runs restlessly in the stand. He Ruckelt rather I would say, speed is at about 600-650. MKL is also on and many Sometimes it flashes in front of itself and afterwards it shines again continuously. But if you drive with the vehicle or accelerates you can notice nothing of power loss! I know it, because I had the same Arosa with the 1.0 engine a few weeks ago ! In addition I noticed if you turn on ventilation dipped light the speed runs a little higher and the engine runs quieter! throttle valve I have already looked at, as good as clean, no deposits to recognize superficially ( also what I have tested so far is when I take out the ignition cables from the cylinder 2 and 3 the engine runs just as restless as before. I also saw that the electric sparks are there so it ignites (had unfortunately also got an electric blow off). But as soon as I take off the ignition cables the engine goes off. I have of course looked at the ignition transformer and ignition cables properly they really seem to be like new! I couldn’t test spark plugs because I lacked the necessary tool to expand them. Now since you asked, what can it be? I took another picture of engine with it.