I have a 1984 e28 520i with 220.000 kms and I have problem with the number five cyl. When I take out the the spark, this it is covered with oil. The CO2 reading of the car is 1,4 % and the HC is 450 ppm. The compression of the cyl. is 150 psi and the others cyls. is betwen
175 and 180 psi.Any of you have a similar problem? what happen? Is the rings? What can I do without overhaul? A ring change?
I only use a Liqui Moly oil and change it each 5000 kms.
Regards, and sorry for my English, I live in Chile...