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What to Do When Fuel Pump Pressure is Low?

1 Answers

ValerieLee

07/30/25 1:52am

Solutions for low fuel pump pressure: 1. Replace the fuel pump motor; 2. Clean the filter screen; 3. Replace the fuel pump assembly. The fuel pump is a lightweight and compact pump, available in in-line, distributor, and single-unit types. Causes of low fuel pump pressure: 1. Wear of the oil seal at the rear end of the fuel pump drive gear shaft, loose pipe joints, air in the pipeline, or insufficient fuel in the tank; 2. Wear or jamming of the fuel pump gear end face bearing, resulting in excessive axial clearance of the fuel pump gear; 3. Damage to the needle roller bearing, abnormal meshing of the fuel pump gear, or scoring of the fuel pump housing inner cavity; 4. Jamming of the fuel pump regulating valve or safety valve, insufficient spring force, or breakage.

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