Ana shows you how to quickly remove, replace and code a new fuel injector on BMW models with an N20 engine. BMW N20 Engines utilize direct injection, where fuel sprays directly into the combustion chamber. This enables more precise fuel control within stricter emission standards. When diagnosing an engine misfire or rough running concern, you may find a faulty injector. Let’s take a look at what that may look like on our iSCAN SF.