1G-2 Fuel System:

General Description

Fuel System DescriptionS5RW0C1701001

CAUTION!

This engine requires the unleaded fuel only. The leaded and/or low lead fuel can result in engine damage and reduce the effectiveness of the emission control system.

The main components of the fuel system are fuel tank, fuel pump assembly (with fuel filter, fuel level gauge, fuel pressure regulator), fuel feed line and fuel vapor line.For the details of fuel flow, refer to Fuel Delivery System Diagram: .

Fuel Delivery System DescriptionS5RW0C1701002

The fuel delivery system consists of the fuel tank, fuel pump assembly (with built-in fuel filter and fuel pressure regulator), delivery pipe, injectors and fuel feed line.The fuel in the fuel tank is pumped up by the fuel pump, sent into delivery pipe and injected by the injectors.As the fuel pump assembly is equipped with built-in fuel filter and fuel pressure regulator, the fuel is filtered and its pressure is regulated before being sent to the feed pipe.

The excess fuel at fuel pressure regulation process is returned back into the fuel tank.Also, fuel vapor generated in fuel tank is led through the fuel vapor line into the EVAP canister.For system diagram, refer to Fuel Delivery System Diagram: .

Fuel Pump DescriptionS5RW0C1701003

The fuel pump (1) is an in-tank type electric pump. Incorporated in the pump assembly are;a fuel filter (2), a fuel pressure regulator (3) and a fuel level sensor (gauge) (4).Addition of the fuel pressure regulator to the fuel pump makes it possible to maintain the fuel pressure at constant level and ECM controls compensation for variation in the intake manifold pressure.

Schematic and Routing Diagram

Fuel Delivery System DiagramS5RW0C1702001

I4RS0B170001-01

I5RW0A170001-02

1. Fuel tank 7. Fuel vapor line 13. Fuel cut valve

2. Fuel pump assembly 8. Intake manifold 14. Fuel and vapor separator

3. Fuel pressure regulator 9. EVAP canister 15. Fuel pump

4. Delivery pipe 10. Fuel filter 16. Tank pressure control valve

5. Fuel injector 11. Fuel level sensor (gauge)

6. Fuel feed line 12. EVAP canister purge valve