What are the effects of a fuel pump oil leak?

1 Answers
DelAnderson
07/30/25 12:49am
The effects of a fuel pump oil leak are as follows: 1. It can cause weak acceleration and braking when suddenly accelerating. 2. It can cause abnormal noises, such as a buzzing sound while driving. 3. It can make the car difficult to start, requiring prolonged turning of the key. Causes of fuel pump oil leakage: 1. Issues with the sealing rings of the moving or stationary rings. Reliability and cost factors are the main considerations, as electric pumps require additional power supply and have lower durability compared to mechanical ones. 2. Particles entering the sealing surfaces of the stationary or moving rings during operation. 3. Excessive compression during the installation of mechanical seals, leading to scratches on the friction surfaces and resulting in oil leakage. High-pressure fuel pumps achieve sealing through sealing rings, which might be simple compression-type sealing rings.
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