Dear members and professionals! After we have asked in several free workshops whether someone can repair the vehicle we are now in despair and please here for help! Vehicle is a camper with OM616 diesel engine Bj 1980 – 230,000 KM. The problem is: The engine smokes blue as soon as it runs idle about 2-3 minutes. Starting in cold condition it does heavy and in warm condition immediately without annealing. When starting in cold condition he smokes blue/black whereby blue clearly If it is warm and during the ride there is no smoke when giving gas or in idle. As soon as the engine runs in idle after 2-3 minutes, it starts to smoke. With every second it squirts more and more. When I then drive and give a little more gas the squirting stops almost completely until I stop again in idle 2-3 minutes. The vehicle has no water consumption and engine oil consumption MAX 0.4 liters to 1000KM. (in recent years from FFM to Berlin and back fa so the value) Could someone please give me a hint so that I can find the cause and fix it?? Thank you