Hello, maybe someone can help me. I have been driving a Sl 500 for about 15 years, Bauj. 91. In the meantime the good piece has about 150000 km on the hump, 70000km of it were driven by me. The vehicle has never left me in the desert without exception. Last after about 50 country road kilometers the power was abruptly gone and since then runs only on 4 cylinders connected with strong unburnt petrol odor. Both ignition coils work perfectly, and the distribution caps are it a Also the renewal of the corresponding ignition cables did not work. It does not reach the corresponding cylinders no spark of ignition. Certainly I could bring the vehicle into a Mercedes workshop, only a complete renewal of the ignition system including the zund control unit and wire harness can and I do not want to afford at the present time. In the end a defective fuse or a contact error turns out. Maybe someone here in the forum has an idea. I am grateful for all the hints.