Nabend, With my 99’er V70 it does not run round. It consumes animally a lot of oil (about 5L in 3 weeks) and also on the 1st cylinder in the last 2 months 4 spark plugs dirty (black, spark no longer comes). Valve shaft seal is new, oil consumption still there. 10W40 instead of 0W30 pure (dünnes oil for possible leak search). No improvement. Since Friday it jerks neatly and seems to not ignite properly on the 1st cylinder. Coil was exchanged today and candle also, all unaltered Has anyone been able to gain experience in this area? Tap the injection nozzle -> Unround barrel, oil consumption, spark plug consumption Lg, Christian