What are the symptoms of a diesel vehicle's hand fuel pump pressure relief?

1 Answers
DelJameson
07/29/25 3:35pm
When the hand fuel pump experiences pressure relief, the vehicle may exhibit symptoms such as difficulty starting, engine shaking, negative pressure in the fuel tank, reduced fuel pumping volume, and weakened power. 1. Causes of pressure relief: A common reason is the aging or cracking of the sealing ring. After the hand fuel pump loses pressure, there will be many air bubbles in the fuel line, and the air must be completely purged from the line before repairs can be made. 2. Introduction to the hand fuel pump: The hand fuel pump mainly consists of the pump body, rear seat, fuel storage tank, and handle. When the hand fuel pump fails, it becomes very difficult to start the vehicle.
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