Power’s gone

Hello, my 460 Turbo makes again mucken: At lower speeds everything is relatively normal, but from 140 km/h the power is completely missing. The engine “capsulates” the power – you give full throttle, but nothing happens anymore (even switching back doesn’t bring anything). At the same time the engine jerks (as with ignition stops). From time to time it is also “first” at 160 km/h. Overall the engine runs extremely restless in the stand or even in idle mode. In addition, it smells, almost like when oil burns with it. could the problem be there? Did someone ever have a similar problem? Greetings, Anja