General information about the fuel system (Scorpio 1)

The fuel system includes the fuel tank, fuel lines, fuel pump, filter, carburetor with air filter or one of the fuel injection systems.

The main element of the fuel system is the carburetor or injection system, which are tested and adjusted at the manufacturer for a specific engine and fuel grade. Increased fuel consumption and reduced engine power are usually not a defect in the fuel system, but have other causes, among which the driving style and driving conditions play a particularly important role. Therefore, in carburetors, it is only necessary to carefully adjust the idle system. Correct adjustment of the idle system has a significant effect on engine operation in transient modes up to medium engine speeds.

The fuel tank is located at the rear of the vehicle. The pump pumps fuel into the carburetor or fuel injection system. The pump capacity exceeds the engine's needs, and excess fuel is returned to the tank via the return line, which eliminates the formation of vapor locks in the fuel lines.

Carburetor engines are equipped with two-chamber carburetors with lower draft and automatic choke, Pierburg on OHC engines and Weber on DOHC engines.

On the Weber carburetor, idle speed is controlled by a stepper motor.

Some models use the Bosch L-Jetronic fuel injection system. The system is controlled by the EECIV module (Electronic Engine Control Mk IV).