Moin people, my brother took his V70 into the toilet powerfully: engine code B 5254 T , mileage 125 tkm. After a normal highway ride (about 140 to 160 km/h) the engine suddenly ran only on 4 pots. Ignition problems could be ruled out, compression test returned zero compression on the 2nd cyl.. Head was taken ruter, an outlet valve had burned the plate to a quarter away. The head was repaired, 4 new valves for the 2nd cylinder, all Vent. Scha In addition, the throttle valve was also replaced because the known problems with the Magneti-Marelli part occurred. The first drive after the repair looked good, engine went well. However, we found an oil consumption of 1.5l to 500km. The turbo did not take any damage due to the missing valve plate part, it was not found despite intensive search (CAT, exhaust gas recirculation, Krü The only thing that remained was that the turbo blows out the oil, so the turbo was removed and sent to the Motair company in Cologne. There the loader was dismantled, but nothing was detected except “normal” wear. If the loader is already apart, it is also re-stocked. Only we are slow with the Latin at the end, 3l oil on 1000km is definitely SLEIGHT. Installation errors in the head are practically also excluded, since a professional repair company and a KFZ-M Has anyone got a tip, a special hose, a venting of the engine housing or anything else that could be the problem here? Thanks and greeting Klaus