Does the fuel pump replacement of Mercedes-Benz GLE320 require removing the fuel tank?

[WyattFitz]

Yes. The rear floor of the Mercedes-Benz GLE320 does not have an access hole for the fuel tank, so replacing the fuel pump requires removing the fuel tank. Introduction to the fuel pump: As the most fundamental component in the engine fuel supply system, the fuel pump is responsible for drawing fuel from the tank during engine operation and delivering it continuously at a certain pressure through the fuel supply line to the engine. The high-pressure fuel pump then performs secondary pressurization, providing a measured amount of fuel to each cylinder according to the engine's firing order. Causes of insufficient fuel pump pressure: Wear of the oil seal at the rear end of the fuel pump drive gear shaft or loose pipe connections, leading to air in the pipeline.