What to Do When the Car Fuel Pump is Too Noisy?
1 Answers
There are several reasons that may cause excessive noise from the fuel pump: 1. The viscosity of the hydraulic oil is too high. High viscosity reduces the pump's self-priming capability and volumetric efficiency. Pay attention to selecting hydraulic oil with appropriate viscosity in the future. 2. Improper installation of the fuel pump and motor, meaning the concentricity between the pump shaft and the motor shaft is inconsistent, causing the pump shaft to bear radial force and generate noise. At this time, you can check and adjust the concentricity of the fuel pump and motor installation to solve this problem. 3. The oil level in the tank is too low, or the suction pipe is blocked, increasing the pump's suction resistance, causing the pump to suck air or there is air leakage in the inlet pipe section. At this time, clean the filter, unclog the intake pipe, and check and tighten the connection screws of the inlet pipe section. 4. There is air inside the fuel pump. This fault usually occurs when a new pump is installed. When starting a new pump, you should first add oil to the pump to lubricate the pump's bearings, plungers, and cylinder block. You can open the fuel pump's oil filler port while the pump is running to allow the air inside the pump to escape from the filler port.
