BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car



BMW E30
+ 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. Air stream measuring instrument
   6.5. Throttle branch pipe
   6.6. Fuel pressure regulator
   6.7. Nozzle of launch of the cold engine and thermotimer
   6.8. Check and replacement of nozzles
   6.9. Air proofreader 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. Fuel pipes and union
   6.14. Fuel tank
   6.15. Air filter
   6.16. Cable of the 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. Useful tips



6.2. Specifications

GENERAL INFORMATION

Carburetor (Solex 2B4 type)

Main jet:
  – 1st camera
X120
  – 2nd camera
X90
Jet of the air proofreader:
  – 1st camera
135
  – 2nd camera
75
Diameter of the big diffuser:
  – 1st camera
24 mm
  – 2nd camera
28 mm
Air jet of idling:
  – 1st camera
50/120
  – 2nd camera
40/125
Diameter of the needle valve of the float-operated camera
2,0 mm
Gap of the air gate
4 – 5,5 mm
Preliminary tightness of a spring of the sensor of an angle of rotation of a butterfly valve
22 – 24 mm
The control size for installation of a float:
  – 1st float-operated camera
27 – 28 mm
  – 2nd camera
29 – 31 mm

Carburetor (Solex 2BE type)

Main jet:
  – 1st camera
X120
  – 2nd camera
X110
Jet of the air proofreader:
  – 1st camera
140
  – 2nd camera
70
Diameter of the big diffuser:
  – 1st camera
24 mm
  – 2nd camera
28 mm
Fuel jet of idling:
  – 1st camera
47,5
Air jet of idling:
  – 2nd camera
180
Diameter of the needle valve of the float-operated camera
2,0 mm
Gap of the air gate
4 – 5,5 mm
Resistance of a winding of the sensor of an angle of rotation of a butterfly valve
0,97 – 1,63 Ohms
Resistance of the sensor of temperature of the sucked-in air:
  – at -10 °C
8200 – 10500 Ohms
  – at -20 °C
2200 – 2700 Ohms
  – at 80 °C
300 – 360 Ohms
The control size for installation of a float:
  – 1st float-operated camera
27 – 28 mm
  – 2nd float-operated camera
29 – 31 mm
Control pressure of fuel (carburetor engine, idling)
0,1 – 0,3 kgfs/cm2
The systems of injection given for check
Pressure of fuel, kgf/cm2:
  – 316i, M40/B16 engine
3,0 (±0,06)
  – 318i, M10/B18 engine
2,5 – 3,0
  – 318i, M40/B18 engine
3,0 (±0,06)
  – 320i, the M20/B20 engine (with system of injection L-Jetronic)
2,5 – 3,0
  – 320i, the M20/B20 engine (with system of injection Motronic)
2,5 (±0,05)
  – 325i, M20/B25 engine
3,0 (±0,05)
Pressure in fuel system after an engine stop
2,1 kgfs/cm2
The fuel pressure developed by the pump
6,3 – 6,9 kgfs/cm2
Fuel pressure in the pump after an engine stop
5,5 kgfs/cm2
Pumping pump fuel pressure
0,28 – 0,35 kgfs/cm2
Resistance of nozzles
14,5 – 17,5 Ohms
Free wheeling of a cable of a butterfly valve
1,0 mm

Inhaling moments (N. of m)

Fastening of the carburetor
10
Fastening of the pump
12
Bolts and nuts of a throttle branch pipe
19 – 28
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