E30 series BMW 3

since 1983-1994 of release

Repair and car operation

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
- 6. Fuel system
   6.2. Specifications
   6.3. Check of system of injection
   6.4. Measuring instrument of a stream of air
   6.5. Throttle branch pipe
   6.6. Regulator of pressure of fuel
   6.7. Nozzle of start-up of the cold engine and thermotimer
   6.8. Check and replacement of nozzles
   6.9. Air proof-reader of idling
   6.10. Order of a decompression of fuel system
   6.11. Check of pressure of fuel
   6.12. The fuel pump, the pump of pumping and the fuel level sensor in a tank
   6.13. Gasoline pipe lines and union
   6.14. Fuel tank
   6.15. Air filter
   6.16. Cable of a drive of a butterfly valve
   6.17. Carburetor
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Good advice


6.6. Regulator of pressure of fuel


Regulator of pressure of fuel

The regulator is reported with a cavity of a soaking-up collector through a vacuum hose.

Bolts of fastening of a regulator of pressure of fuel (L-Jetronic system)

1. Suppressor of pulsations

2. Fastening bolts

3. Vacuum hose

Bolts of fastening of a regulator of pressure of fuel (Motronic system)

A.Bolty of fastening

Century. Return gasoline pipe line

S.Shlang of a regulator


1. Execute a decompression.
2. Disconnect the battery from weight.
3. Disconnect from a regulator a fuel hose and on its place establish a manometer.
4. Attach the battery, connect the pump, include ignition and check existence of podtekaniye of fuel.
5. Attach the vacuum pump to the place of a vacuum hose, turn on the fuel pump. Consider pressure of fuel at depression creation on a regulator and without depression. Pressure of fuel should decrease in process of depression increase.
6. Attach a vacuum hose, start the engine and consider pressure of fuel idling. Disconnect a vacuum hose, – thus pressure should increase sharply.
7. If pressure low, press a return gasoline pipe line. If thus pressure does not increase, the fuel pump is faulty or the direct gasoline pipe line is littered. If pressure sharply increases, replace a pressure regulator.
8. If pressure too high, stop the engine, disconnect and blow a return gasoline pipe line. If the return gasoline pipe line is not littered, replace a pressure regulator.
9. If change of pressure does not correspond described, check depression on a regulator, having attached to the place of a vacuum hose the vacuum gage (the engine should idle).
10. If depression is, a regulator of pressure replace. Otherwise believe tightness of a hose and the union on vacuum connection.


1. Execute a decompression and disconnect the battery from weight.
2. Disconnect from a regulator return fuel and vacuum hoses. Unscrew bolts of fastening (shooters) and remove a regulator.
3. Installation is carried out upside-down. Replace ring laying.