What is the reason for the shutdown of BMW N13 injection device 1?

[OSteven]

BMW usually shuts down this type of injection device due to spark plug issues, which can be diagnosed using the swap method. The spark plugs in the N55 engine should be replaced every 60,000 kilometers. Introduction to the injection device: The water mist direct injection cooling system can significantly improve efficiency when the engine is under full load. It avoids rich fuel injection and reduces exhaust temperature. It can reduce daily driving fuel consumption by up to 8%. Lower exhaust temperatures also reduce the production of harmful substances. Fuel compatibility: Optimal power output can be achieved even with low-octane 95-grade fuel; therefore, turbocharged engines equipped with the water mist direct injection system are suitable for use worldwide.