Many thanks for your response, Ken. I replaced all the four spark plugs and there was no misfiring. In fact, the valves were changed along with the timing chain, so I didn't do compression test. All my searches lead to 1. Spark Plug, 2. Coil pack and 3. Valves. I started with the spark plug and it worked. One spark plug was looking bad with a lot of black deposit on it compared to the other three. Suspect Oil Fouling. I believe my Skoda burns a lot of oil and this should be the cause. Should I look further into the oil leak, or can I leave it here? Probably I will leave it here and buy a new car, I don't want to spend another fortune.
Tuesday, August 22nd, 2023 AT 9:38 PM