Hello guys, I’m in despair, I have a Ford Mondeo Tunier Chia Bj. 03/2000 with 99,000KM 1.8l and 115KW.Now I had the following problem on Saturday, I wanted to start at the traffic light and suddenly the car sounds like it’s only running on three cylinders and a bubbling out of the exhaust. Now the following was done on the car: ASU was OK compression test O.K. Ignition coil New spark plugs and cables New (original parts were installed) On the laptop no Error displayed What can the error be ???? I really despair and would be very happy about every tip. The car drove perfectly until the moment, no jerking or similar !!!