BMW N52, N54, & N55 Camshaft Bearing Ledge Wear - An Invisible Disaster
Cam bearing ledge wear is the most common VANOS-related performance issue on high-mileage N52 and N54 engines and the earliest series of N55s. Due to an overlook in design, there's a seal that will eventually wear and cause a myriad of issues. Although it may appear as a simple oil leak and some...
