After doing some more work like removing the exhaust, turbo, headers etc i took a photo of what i believe is the problem.
This is my work area now
http://imageshack.us/photo/my-images/204/06092011029.jpg
This is the front, left side exhaust valve.
http://imageshack.us/photo/my-images/820/06092011030.jpg
This is the center left side exhaust valve.
http://imageshack.us/photo/my-images/845/06092011031.jpg
I can see oil inside there but it doesn`t look like it comes from worn valve stems. Anyone have seen this before and know where the problem is?
Tia
Oheggem