Opel Vectra A

since 1988-1995 release

Repair and operation of the car



Vektr's Opel And
+ 1. Maintenance instruction
+ 1.1 Maintenance
+ 2. Engine
+ 3. Repair of DOHC engines
+ 4. Repair of the diesel engine
+ 5. Cooling system
+ 6. Fuel system
- 7. The fuel and exhaust system of models with system of injection of fuel
   7.2. General information
   7.3. Check of system of injection of fuel
   7.4. Air filter
   7.5. Air chamber
   7.6. The control unit of temperature of the air coming to the engine
   7.7. The sensor of temperature of the air coming to the engine
   7.8. Removal of pressure in fuel system
   7.9. The fuel filter on models with the fuel pump out of the fuel tank
   7.10. The fuel filter on models with the pump in the fuel tank
   7.11. Check of the fuel pump
   7.12. The fuel pump installed out of the fuel tank
   7.13. The fuel pump installed in the fuel tank
   7.14. Replacement of the relay of the fuel pump
   7.15. Pipe of a fuel-filling mouth
   7.16. Fuel tank
   7.17. Fuel level sensor
   7.18. Quencher of fluctuations of fuel
   7.19. Accelerator cable
   7.20. Check and adjustment of fuel mix on idling turns
   7.21. Fuel pressure regulator
   7.22. Regulator of turns of idling
   7.23. Sensor of provision of a butterfly valve
   7.24. Potentiometer of provision of a butterfly valve
   7.25. Air stream measuring instrument
   7.26. Measuring instrument of mass of a stream of air
   7.27. Tape measuring instrument of mass of a stream of air
   + 7.28. Fuel nozzles (except Multec)
   7.29. Fuel nozzle (Multec system)
   7.30. Check of a fuel nozzle (Multec system)
   + 7.31. The throttle case (except the Multec system)
   7.32. Throttle case (Multec system)
   7.33. Step engine of management of air supply (idling turns)
   7.34. Potentiometer of provision of a butterfly valve
   7.35. Electronic control device (ECU)
   7.36. Sensor of a detonation and module (X16 SZ models)
   7.37. Sensor of a detonation (Simtec system)
   7.38. An inlet collector (the SOHC engine without Multec)
   7.39. An inlet collector (the SOHC engine with Multec)
   7.40. Inlet collector (DOHC models)
+ 8. Exhaust system and system of decrease in toxicity of exhaust gases
+ 9. Fuel systems of the diesel engine
+ 10. Engine electrical systems
+ 11. Transmission
+ 12. Mechanical transmission
+ 13. Automatic transmission
+ 14. Power shafts
+ 15. Brake system
+ 16. Suspension bracket
+ 17. Body
+ 18. Electric equipment
+ 19. Check of malfunctions
24bec775



7.8. Removal of pressure in fuel system

GENERAL INFORMATION

Prevention

At removal of pressure in fuel system pressure in fuel system just decreases, but fuel still remains in elements of fuel system.


The fuel system of the car consists of the fuel tank installed in a back part of the car, fuel pump, fuel filter, fuel nozzles and the regulator of pressure of fuel in the throttle case. Elements of fuel system connect to use of metal pipes and flexible hoses. In fuel system there is a fuel under pressure at the working engine or at inclusion of ignition.

The fuel system is under pressure a long time even after switching off of the engine and therefore before carrying out any works on fuel system or a rassoyedineniye of elements of fuel system it is necessary to take off pressure.

PERFORMANCE ORDER
1. Remove a safety lock No. 11 of the fuel pump or relay of the fuel pump and start the engine on idling turns to its stop. After a stop of the engine include a starter several times to be convinced that fuel does not arrive to fuel nozzles, then switch off ignition.
2. Establish into place a safety lock or the relay of the fuel pump.