What is the issue with the Changan CS75 fuel pump?

[VanPaige]

Changan CS75 fuel pump issue involves insufficient fuel supply. The fuel supply of the gasoline pump depends on the diaphragm stroke; a larger stroke should result in more fuel being pumped. However, if the fuel pump's output is inherently low while the engine consumes more fuel, the pump's supply should naturally increase. If the engine consumes more fuel but the actual supply is insufficient, this indicates a fuel pump supply deficiency, leading to a lower fuel level in the carburetor float chamber and insufficient engine power. The causes of the fault are as follows: 1. Sealing gasket is too thick: The sealing gasket at the junction between the fuel pump and the fuel tank is too thick. 2. Poor sealing at the housing junction: The diaphragm is ruptured, or the seal between the diaphragm and the upper housing of the fuel pump is poor. 3. The inlet and outlet valves are stuck or have poor sealing. 4. Severe wear: Reduces the diaphragm stroke. 5. Blocked pipeline: The pipeline from the fuel tank to the fuel pump is blocked, or the diaphragm spring is faulty.