Subaru Legacy

since 1990-1998 release

Repair and operation of the car

Subaru of Legasi
+ 1.1. Identification numbers
+ 2. Maintenance
+ 3. Engines
+ 4. Heating, ventilation
- 5. Fuel system
   5.1. Introduction
   5.2. Technical characteristics
   5.3. Removal of pressure in fuel system
   5.4. Check of the fuel pump
   5.5. Fuel pump
   5.6. Fuel separator (only models 4WD)
   5.7. Fuel level sensor
   5.8. Fuel tank
   5.9. Casing of the air filter
   5.10. Accelerator cable
   5.11. Electronic system of injection of fuel
   5.12. Fuel system
   5.13. System of air supply
   5.14. System of electronic control
   5.15. Check of system of injection of fuel
   + 5.16. Check and replacement of elements of system of injection of fuel
   5.17. Turbocharger
   5.18. Check of the executive mechanism of the gate of a turbocharger
   5.19. General check of a turbocharger
   5.20. Removal and installation of a turbocharger
+ 6. Exhaust system
+ 7. Systems of start, ignition
+ 8. Transmissions
+ 9. Coupling, shaft
+ 10. Brake system
+ 11. Suspension bracket
+ 12. Steering
+ 13. Body
+ 14. Electric equipment


5. Fuel system

5.1. Introduction


Arrangement of elements of system of injection of fuel in a motor compartment

1 – fuel filter
2 – throttle
3 – fuel pressure regulator
4 – fuel nozzles
5 – casing of the air filter

Scheme of connections of elements of fuel system and system of catching of vapors of fuel

1 – electromagnetic valve of cleaning
2 – fuel pressure regulator
3 – throttle
4 – inlet collector
5 – fuel filter
6 – fuel pump
7 – the pumping-over pump
8 – valve
9 – backpressure valve
10 – dvukhkhodovy valve
11 – canister
12 – control valve

All models are equipped with electronic system of injection (EFI). On the majority of models the electronic system of injection of MPFI, and on models with engines of 1,8 l – SPFI is installed. The fuel system consists of a fuel tank, the electric fuel pump shipped in a tank, the relay of the fuel pump and nozzles. On models 4WD the separator of vapors of fuel is established. In a fuel tank of models 2WD the fuel pump and the fuel level sensor are executed in the form of one block. On models 4WD the divided fuel tank with two fuel level sensors located in each section of a fuel tank is used. The fuel tank on models 4WD is equipped with the pumping-over pump which pumps over fuel from the left section in right in order that the weight of fuel was distributed evenly.


The fuel system is under pressure a long time after switching off of the engine. At any separation of fuel-supply lines it is necessary to remove previously pressure in fuel system.