Hello together, I have the following problem and I hope one or the other can help me… After my car seemed to have a problem with the cooling water circuit (engine ran hot and engine control light went on) first the thermostat was renewed (incl. air drained etc.) After that the problem still did not seem to be solved, because the cooling water emptied itself with running warm engine in the balance tank quite quickly and only after the engine cooled down, s As a result, it was diagnosed that the ZKD had to be replaced. However, since this is quite expensive in a workshop (>€1000), it seemed to me rather uneconomical, so that I have now unscrewed the cylinder head myself (according to various instructions/instructions I had found). Now, however, the following problem arises: With one cylinder, the outlet valves are open and with all others they are closed. How is this possible or. How can I change this position? In my opinion, and if I have done the execution correctly so far, all valves must be closed. Can someone give me a tip for this? I’m also trying to set up a suitable image in which it becomes recognizable what I mean. Thank you very much for the feedback!!!