The N46 is a complex piece of engineering. Unlike older pushrod engines, this modern BMW mill features:
If you are hunting down a "Lean Mixture" fault code (common in the N46), the vacuum diagram is your best friend. It allows you to trace every inch of rubber and plastic hose that could potentially crack and introduce un-metered air into the system. Bmw N46 Engine Diagram
technology. While efficient, it is a maintenance-sensitive engine that requires specific care to remain reliable. Engine Layout and Key Components The N46 is a complex piece of engineering