Where is the fuel pump located in a Chevrolet Sail?
2 Answers
Chevrolet Sail's fuel pump is located under the rear seats. After removing the rear seats, you will see a cover plate. Opening this cover plate will reveal the fuel pump. Additional information about the fuel pump is as follows: 1. The fuel pump draws gasoline from the fuel tank and delivers it through pipelines and the fuel filter to the float chamber of the carburetor. Due to the presence of the fuel pump, the fuel tank can be placed at the rear of the vehicle, away from the engine, and positioned lower than the engine. 2. Generally, the maximum fuel supply capacity of a fuel pump is 2.5 to 3.5 times greater than the maximum fuel consumption of the gasoline engine. When the fuel supply exceeds consumption and the carburetor float chamber needle valve closes, the pressure in the fuel delivery pipeline increases, causing the diaphragm stroke to shorten or stop working. There is also an electric fuel pump that operates not via camshaft drive but through electromagnetic force repeatedly actuating the pump diaphragm. This type of electric pump allows flexible installation positioning and helps prevent vapor lock. For electronic control gasoline injection systems, the fuel pump typically uses a new impeller-type electric pump installed inside the fuel tank, with higher pumping pressure compared to carburetor fuel supply systems.
I've driven a Chevrolet Sail for several years, and the fuel pump is located inside the fuel tank, positioned beneath the floor at the rear of the vehicle, usually under the rear seats. To inspect or replace it, you'll need to move the rear seat cushion or lift the carpet cover in the trunk to access it. This design has an advantage: the fuel in the tank helps cool the pump, reducing operational noise and protecting it from external dust damage. I remember once my car had trouble starting, and the issue turned out to be the pump; during diagnosis, listen for any abnormal humming sounds from the engine—a faulty fuel pump often causes insufficient fuel supply, leading to engine shaking or stalling. It's recommended not to attempt replacing it yourself, as fuel system leaks can be dangerous—it's best handled by a professional shop. Using quality gasoline and regularly cleaning the fuel tank can extend the pump's lifespan. After all, the built-in location means less frequent maintenance, saving long-term costs.
