BMW 4.4-liter N63 Engine Experiencing Frequent Reliability Problems - autoevolution
Therefore, as I was waiting for my car to get ready, I started talking to the mechanic about a variety of things and amongst them was the reliability of new engines compared to old ones. As it turns out, even the mechanics working for BMW agree that ‘they don’t make them like they used to anymore’. As it turns out, if you add more electronics and sensors to an engine, it becomes more of a liability. I’m being ironic, of course, but what shocked me was that today, some BMW engines barely make it past the 62,000 mile (100,000 km) mark. As my mechanic was talking, I was getting more and more intrigued. He claimed that the original N63 engine that goes by the codename N63B44O0 is a downright bomb on wheels. According to him, he changed at least a dozen of them because of faulty injectors or a faulty high pressure fuel pump. It seems like the injectors would shoot too much petrol inside the cylinder which would in turn cause some shrapnel to come off that would eventually get stuck in all sorts of places and cause the piston to crack the case. Basically, you’d be in for a surprise when a rod or even a piston would shoot through the engine block. Being a more reluctant person, I though he was talking gibberish at first but then I went online and started digging. Source: www.autoevolution.com
