BMW 5 Series E39

since 1996-2001 release

Repair and operation of the car

+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Cooling systems, heating
- Power supply system and release
   - Power supply system
      Economy of fuel at the movement
      Rules of respect for purity during the work with fuel system
      Check of the relay of the fuel pump
      Check of productivity of the fuel pump
      Removal and installation of the sensor of a reserve of fuel and fuel pump
      Removal and installation of the case of the air filter and measuring instrument of mass of air
   + System of injection of the petrol engine
   + Power supply system of the diesel engine
   + System of production of the fulfilled gases
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment
+ System of onboard diagnostics


Power supply system

General information

Fuel tank

1 — the fuel tank
2 — the shock-absorber
3 — a nut
4 — a bolt
5 — the plug

6 — a collar right (at the left similar)
7 — a damper
8 — a collar
9 — a bulk pipe
10 — a stopper
11 — laying

The power supply system consists of the fuel tank, fuel pump which is in a tank and fuel-supply lines, and also the fuel and air filter. Systems of injection of petrol and diesel engines are described in different sections.

The fuel tank - plastic, with a capacity of 70 l, is fixed by collars under a back seat, before a back suspension bracket. The tank is divided into two compartments.

The tank is connected with the atmosphere through an adsorber. The adsorber is behind an internal wing of a back. The reserve of fuel is shown the indicator on the dashboard. At the same time the level of fuel is measured separately for each camera by means of the lever sensor. The microprocessor in the dashboard block on the basis of impulses of injection, speed of the movement and electronic signals of the lever sensor counts the current volume of fuel in a tank.