BMW 5 series E39

Since 1996-2001 of release

Repair and car operation

+ Introduction
+ The maintenance instruction
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
- The power supply system and release
   + The power supply system
   - System of injection of the petrol engine
      Memory of malfunctions
      Security measures and rules of observance of cleanliness at work with injection system
      Work of system of injection
      Check of systems of ignition and injection
      Adjustment of a drive of gas
      Removal and installation of a branch pipe throttle заслонки
      Removal, check and installation of the valve of adjustment of idling
      Check, removal and installation of the gauge of temperature
      Check of injectors
      Removal and installation of injectors
   + The power supply system of the diesel engine
   + System of release of the fulfilled gases
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes
+ System of onboard diagnostics

Check of injectors

Injectors submit fuel импульсно. Thus injection has конусную the form. After the termination of injection the injector gate is densely closed. Негерметичность injectors leads to difficulties at start of the heated-up engine. Faulty injectors lead to work of the engine during some time after its deenergizing and lead to faults.


1. Uncover injectors.
2. Start the engine on single turns.
3. On the working engine a stethoscope hear to each injector. Gates of injectors should click at opening and closing.
4. If the stethoscope is not present, it is possible to put a screw-driver or a finger.
5. If unusual noise or its absence is found out, it is necessary to check up pressure, resistance and tightness of injectors.

Check of pressure and resistance of injectors


1. Check up pressure. For this purpose расстыкуйте штекерное connection of injectors also attach диодную a control lamp between contacts of wires of a food. Include a starter. The light-emitting diode should blink.
2. If the diode does not blink, the wire breakage or malfunction of the block of management can be the reason.
3. Switch off ignition.
4. Attach an ohmmeter between both contacts on each injector and measure resistance. If resistance differs from set, replace an injector. Resistance should be 15—17.5 Ohm.
5. If necessary replace a faulty injector.

Tightness check


1. Remove injectors. Топливопроводы do not disconnect from a distributive highway.
2. Attach штепсели to injectors.
3. Lower injectors in capacity.
4. Ask the assistant some seconds to press a starter. Compare character of injection of injectors among themselves. Injection should be cone-shaped and identical at all injectors.
5. Switch off ignition.
6. Disconnect a plug lath of injectors.
7. Include on 5 about ignition, without including a starter. Check up tightness: within one minute one drop, should be formed no more.
8. Establish injectors.

On HUNDRED firms BMW tightness is checked by compressed air. Not tight injectors are processed in the ultrasonic device of clearing by means of a cleaner.