Repair and replacement of fuel lines and connectors. BMW the 5th E28/E34 series (from 1981 to 1993 of release) 2010-2014.
Repair of BMW E28 and series E34 from 1981 to 1993
1. Cars of the BMW brand of 5-series
2. Engine
3. Cooling system
4. Power supply system
4.1. General information
4.2. Pressure removal in system of injection of fuel
4.3. Check of pressure of fuel / fuel pump
4.4. Removal and installation of the fuel pump, intermediate pump and fuel level sensor
4.5. Repair and replacement of fuel lines and connectors
4.6. Removal and installation of a fuel tank
4.7. General information about cleaning and repair of a fuel tank
4.8. Removal and air purifier installation
4.9. Check, adjustment and replacement of a cable of an accelerator
4.10. General information about the carburetor
4.11. Removal and carburetor installation
4.12. Cleaning and carburetor adjustment
4.13. General information about fuel injection
4.14. Systems of injection of fuel
4.15. Check of functioning of system of injection of fuel
4.16. Functioning check, removal and installation of a measuring instrument of a stream of air
4.17. Functioning check, removal and installation of the case of a throttle
4.18. Check of functioning and replacement of a regulator of pressure of fuel
4.19. Check of functioning and replacement of an injector of cold start and temperature switch
4.20. Check of functioning and replacement of fuel injectors
4.21. Functioning check, adjustment and replacement of the air valve of stabilization of idling
4.22. Search of malfunctions of system of injection of fuel
4.23. Diagnostics of malfunctions of a power supply system
5. Ignition system
6. Control systems of the engine and decrease in toxicity of the fulfilled gases
7. System of production of the fulfilled gases
8. Coupling
9. Manual box of gear shifting (RKPP) and automatic transmission (AT)
10. Transmission line
11. Steering and suspension bracket
12. Brake system
13. Body
14. Control body sizes
15. Heater and air conditioner
16. System of onboard electric equipment
17. Routine maintenance of the car
18. Size table and adjusting data
19. Schematic electric circuits
20. Governing bodies and operation receptions
21. System of onboard diagnostics - a principle of functioning and codes of malfunctions
 








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4.5. Repair and replacement of fuel lines and connectors

Fuel is extremely inflammable, therefore at work with any part of fuel system accept additional precautionary measures. Do not smoke and do not allow emergence near a working zone of open fire or lamps without plafonds. Also do not work in garage with the equipment at natural gas with a match. At any work with fuel system use goggles and keep in readiness the fire extinguisher. At fuel hit on skin, immediately wash away it water and soap.

Before starting service of fuel lines surely disconnect a negative wire from the battery and (on models with fuel injection) dump pressure in a power supply system (see. The section pressure Removal in system of injection of fuel).

Lines of giving and fuel return, and also branch of fuel evaporations pass from a fuel tank to an impellent compartment of the car. Lines fasten to the car bottom clamps and screw assemblies. From time to time lines should be checked on existence of dents, twisting and other defects. Do not forget to pay also attention to a condition of short sections of the hoses inserted into the trunk fuel main - they are the most probable source of leaks (see an illustration).

At detection of signs of hit of dirt in a power supply system or in the fuel filter it is necessary to disconnect and blow fuel lines. On models with injection of fuel check also a condition of the mesh filter on the submersible fuel pump.

As fuel lines on models with fuel injection constantly are under a high pressure, special demands are made to them. At replacement of rigid tubes use only firm tubes of BMW. At all do not establish plastic or copper sections - these materials are not capable to maintain the loadings connected with high pressures.


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4.4. Removal and installation of the fuel pump, intermediate pump and fuel level sensor
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4.6. Removal and installation of a fuel tank