Hello together, during the last two months I restored my Cadillac as well as I could and registered again last week. I had run the engine often short, moreover there was a ride of approx. 5km to the TÜV and back again. Before that the engine did not run for a year. Now that I finally wanted to make the first exit, the engine did not start at all unexpectedly. It stuck firmly. The starter is new and works perfectly. The valve control at the top of the cover caps looks normal. If I look through the spark plug opening in the cylinder, I can’t find anything extraordinary either. At the front we have then removed cooler, water pump and the cover plate from the engine compartment, where the latter is not completely off, since we do not yet have the recording of the belt wheel. However, one can look into the engine block and it is noticeable that the steering chain and above all the upper steering wheel of the camshaft is strongly worn out. But can the fixed clamping come from this? In addition, I have to say that the engine gave loud blows on the return drive from the TÜV. Our guess was a defective capacitor of the ignition. This was then replaced and at the following test run everything seemed to be in order again. A few days later But there were strikes again and now the standstill. The engine was switched off normally after the last successful start and did not go out while running. Have great worry that it is something bigger. Does anyone know? Thank you, Thomas