Opel Omega

since 1993-1999 of release

Repair and car operation

Opel Omega
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Repair of engines
+ 4. Heating system and ventilation
- 5. Fuel, exhaust systems
   + 5.1. Petrol engines
   + 5.2. Diesel engine in volume 2,0 liters
   - 5.3. Diesel V6 2,5-liter engine
      5.3.1. Principle of operation of the diesel engine
      5.3.2. Turbokompressor
      5.3.3. System of a retsirkulyatsiya of the fulfilled gases (EGR system)
      5.3.4. Device of preheat of diesel engines
      5.3.5. System prednakala/glow plugs
      5.3.6. Relay of system of preheat
      5.3.7. Air removal from a power supply system
      5.3.8. Fuel pump of a high pressure (TNVD)
      5.3.9. Nozzles
      5.3.10. Check / adjustment of the beginning of giving of TNVD
      5.3.11. Inlet collector
      5.3.12. Main malfunctions of diesel system of injection
      5.3.13. System of production of the fulfilled gases of diesel engines
+ 6. System of start of the engine
+ 7. Ignition system
+ 8. Coupling
+ 9. Transmissions
+ 10. Main transfer, semi-axes
+ 11. Brake system
+ 12. Suspension bracket and steering
+ 13. Body
+ 14. Body electric equipment

5.3.9. Nozzles


Faulty nozzles are at the bottom of strong knock of the engine and subsequently damage of bearings.

Signs of malfunction of nozzles:

  – ignition interruptions;
  – knock in one or several cylinders;
  – the engine overheats;
  – engine capacity falling, high consumption of fuel;
  – too dark exhaust smoke.


Turn on the engine on single turns and one after another release cap nuts of heats of injection. If at an otpuskaniye of any nut knock disappears, means, the faulty nozzle is found.

Nozzles can be checked by means of the special device (in the conditions of a workshop).


1. Remove a casing of the engine and a reception pipe of the exhaust silencer over nozzles.
2. Remove from the holder of a head of cylinders the vacuum pipeline of the amplifier of a brake.
3. Remove an inlet collector.
4. Clean pipelines of injection by a method of cold cleaning.
5. Remove all pipelines (1) injection, having released for this purpose cap nuts on nozzles and TNVD by means of a wrench, for example, HAZET 4550.


Do not change a form of a bend of pipelines. Put on suitable protective caps nozzles and TNVD to avoid dirt hit.

6. If holding clips of pipelines of injection are removed, in advance mark their arrangement.
7. Carefully remove the returnable pipeline from nozzles.
8. Remove nozzles by means of a key of 27 mm, for example, HAZET 4555-1.
9. From below nozzles protect from dirt protective caps.


Pay thus attention to that nozzles did not fall. Besides, disconnect from nozzles of the 4th cylinder a connecting element of a cable for the built-in sensor of the moment of the beginning of injection. All nozzles establish in former situation.


1. Tighten nozzles with effort of 65 N of m.
2. Fix injection pipelines with effort of 25 N of m.
3. Put on the returnable pipeline.
4. Connect a cable together with the sensor of the moment of the beginning of injection on a nozzle of the 4th cylinder.
5. If are removed, establish holding clips according to marking.
6. Establish the vacuum pipeline for the amplifier of a brake on the holder of a head of cylinders.
7. Establish an inlet collector.
8. Start the engine, check a power supply system on tightness.
9. If the engine is not got, pump over a power supply system.