Hello diesel engine specialists, I need your help. What happened? I have a light motor vehicle (moped car) with a diesel engine Lombardini LDW 502. This is a 500 ccm 2 Zyl. 4-stroke diesel suction engine. For this I made an oil change and filter change and after the refill of the oil level was about 5mm above the upper mark on the oil rod (addition for the new (empty) oil filter. At the first start after the change the engine started at high speed. That sounded not normal and I immediately switched off the ignition after approx. 2-3 seconds running time at high speed. I released some oil again, so that the oil level is between the min and max brand. The motor can be rotated by hand on the flywheel (at the shaft output) and has noticeable compression. Here is my question to the specialists: Can I now start the engine normally again or must preparatory work be carried out? What is to be done? I hope you can help me and am grateful f for helpful contributions. Greetings, Fritze