Hello so my 850 iger(2.0 l Benz.) ruckelt ,bockt ….was now already x times in the workshop… was made the following. new distributor cap new spark plugs new moisture and dust seal the symptom remains the same water penetrates minimally into the distributor cap …comes barely 3 km far …. the engine runs in idle time up with the speed …time down …stutters and goes out sometime….whole thing …was so happy with the car… the mechanker is also now speechless… need help by the way ..have with my phone the ticks in picture and sound if someone is interested…