Toksis 3 Report post Posted May 18 (edited) My n46 e90 car: When I change my ignition coil, I noticed that there is oil on the 4th cylinder. What is probably the main cause of it? Is it just replace the sparkplug pipe? or Should I replace the valve cover gasket? Before that I replaced my VVT motor. Thanks. Edited May 19 by Toksis attached another picture. Quote Share this post Link to post Share on other sites
