What are the causes of abnormal fuel pressure in the Pajero's fuel system?
2 Answers
The causes of abnormal fuel pressure in the Pajero's fuel system are: 1. No fuel or insufficient fuel in the tank; 2. The small filter screen on the inlet side of the fuel pump is clogged with dirt, causing poor fuel supply; 3. The inlet and outlet valves of the fuel pump are lifted or stuck, resulting in poor sealing. Taking the 2020 Pajero as an example, it is a mid-to-large-sized SUV with the following dimensions: length 4900mm, width 1875mm, height 1900mm, wheelbase 2780mm, front and rear track width 1570mm, minimum ground clearance 235mm, fuel tank capacity 88 liters, and curb weight 2155kg.
Abnormal fuel system oil pressure has occurred several times on the Pajero. I believe the main causes include aging or damage to the fuel pump. That thing wears out from long-term operation, and internal sealing issues can easily lead to unstable oil pressure. Clogged filters are also a major problem, especially in off-road or dusty areas where dirt accumulates too quickly, causing poor fuel supply. Faulty sensors like the oil pressure sensor can also lead to misjudgment due to inaccurate readings. Having driven for many years, I once encountered a similar situation where the issue was traced to loose or corroded wiring connections, which are more likely to trigger in rainy weather. Finally, if the oil pressure regulator fails, it can't control the fuel flow rate. Overall, regular maintenance of the fuel system and timely cleaning of filters can prevent these issues. Neglecting them can lead to noticeable power loss, difficulty in starting, and a diminished driving experience. It's recommended to use professional equipment to test oil pressure values during each maintenance check to ensure safety and reliability.
