Flex (ethanol) Fuel Pump

Just about every single automobile on the road today with a gas motor is equipped with an electric Flex (ethanol) fuel pump. Inspect the Flex (ethanol) fuel pump fuse: Because you will likely be disconnecting the pumps fuse anyway, its a very good time to verify this as properly. Replace the pump and re-mount the fuel tank. When the fuel level in the float bowl exceeds a certain level, the inlet valve to the carburetor will close, preventing the Flex (ethanol) fuel pump from pumping a lot more fuel into the carburetor. Automobiles with electronic fuel injection have an electronic control unit (ECU) and this could be programmed with security logic that will shut the electric Flex (ethanol) fuel pump off, even if the engine is running. A verify valve is positioned at each the inlet and outlet ports of the pump chamber to force the fuel to flow in a single path only.