Have problems with the AU… have new cat new lambda probe installed… nevertheless I can’t get over it. The values in empty run are okay. But the in the heard rotary range are not OK…are clearly above it… engine is an ABT 2,0l with 90ps has 255tkm on it, consumption a little more oil than normal…we think it’s the valve shaft seals, can it be that he might not get through the AU because of the defective valve shaft seals?