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


6.3. Check of system of injection

1. Check reliability of all connections with weight. Check conducting and system sockets. Weakening of electric connections and bad contact to weight can cause many malfunctions which are observed as serious refusals.
2. Check degree of a zaryazhennost of the battery. Normal operation of sensors and actuation mechanisms of a dosage of fuel depends on supply voltage.
3. Check a condition of the air filter.
4. If the fused safety lock is found, replace it and check work of the corresponding chain. If the safety lock fuses again, find in conducting the wire closed on weight.
5. Check tightness of the channel of an air line from a stream measuring instrument to a soaking-up collector. Check a condition of vacuum hoses. Подсос air can become the reason of abnormal operation of the engine.
6. Remove from the zaslonka case an air line and check existence of resinous deposits and a deposit, clear and wash out an air line a carburetor cleaner.
7. On the working engine put a stethoscope (or a screw-driver) to each of nozzles and hear to the characteristic clicks indicating normal work of nozzles.
8. Check pressure of fuel in the highway.
9. If abnormal operation of the engine is observed, and the specified checks do not give result, address in car-care center service for reading of codes of refusals which are brought in memory of the control unit.