Mazda 626

1991-1998 of release

Repair and car operation

Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engines
   + 3.1. Petrol engines (1,6 and 1,8 liters)
   + 3.2. Petrol 4-cylinder engine (2 liters)
   + 3.3. Petrol V6 engine (2,5 liters)
   + 3.4. Partition of engines (1,6 and 1,8 liters)
   + 3.5. Partition of engines (2,0 and 2,5 liters of V6)
   - 3.6. Diesel engine of 2,0 liters
      3.6.1. Technical characteristics
      3.6.2. Maintenance, repair
      3.6.3. Principle of operation of the diesel engine
      + 3.6.4. Gear belt, installation of phases of a gazoraspredeleniye
      3.6.5. System of preliminary warming up
      3.6.6. Check of the device of preliminary warming up
      3.6.7. Air removal from fuel system
      3.6.8. Check and replacement of the electromagnetic valve of an otsechka of fuel
      3.6.9. Check and adjustment of turns of idling
      3.6.10. Removal and installation of nozzles
      3.6.11. Removal of the vacuum pump
      3.6.12. Diagnostics of malfunctions of a power supply system of the diesel engine
   + 3.7. Systems of electric equipment of the engine
+ 4. Heating and ventilation
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Transmissions
+ 8. Coupling and semi-axes
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electroschemes
+ 14. Good advice

3.6.10. Removal and installation of nozzles


Defective nozzles can cause a strong detonation of the engine and as a result damage of bearings. In the presence of such symptoms leave the engine to idle and in turn release cap nuts of the pipeline of injection. If the detonation disappears when weakening any cap nut, it indicates the corresponding defective nozzle.

It is possible to define a defective nozzle, consistently weakening cap nuts and on fast to a course (at an engine warming up). If after weakening of a cap nut the number of turns does not change, it indicates the corresponding defective nozzle. The nozzle can be checked by means of a manometer. (Work in a workshop; demanded value of a pressure of injection: 135th bar).

The first signs of violation of work of a nozzle are shown as follows:

  – false ignition;
  – a detonation in one or several cylinders;
  – engine overheat;
  – decrease engine capacity;
  – excessively strong black exhaust;
  – fuel consumption increase.


1. Disconnect a cable of negative weight from the accumulator.


Contents of electronic memories, for example memory of defects of the engine or a radio receiver code are thus erased. Before shutdown of the accumulator it is necessary to read subsection 2.11.

2. Carefully clear outside a cleaner or diesel fuel of a tube of injection and by-pass fuel tubes.
3. Remove injection tubes in a set, for what weaken cap nuts (are specified by shooters) on the pump and on nozzles.


Do not break a form of a bend of tubes.

4. Remove nozzles and postpone in the same order, as well as it is necessary to establish.


In the combustion chamber through openings of nozzles dirt should not get.

5. In each opening there is a wavy laying and a washer which are subject to replacement.
6. Needles of nozzles should not have the beaten-out and rough places of landing. Remove a deposit from nozzles a wooden shpatel.


At all do not process a nozzle and a nozzle needle a wire, a file or an emery paper. Do not mix a detail of different forms.



Observe adjusting situation.

Peretyazhka of nozzles can cause their deformation and by that to lead to lag of a needle or other damages.


1. Put nozzles (2) and tighten with effort of 65 N of m. Establish 4 new wavy laying (4) and prokladochny washers (3).
2. Put injection tubes, tighten cap nuts with effort of 25 N of m.
3. Put tubes of removal of fuel with new laying and tighten nuts with effort of 30 N of m.
4. On all nozzles weaken cap nuts of tubes of injection a little.
5. Turn the engine a starter to a fuel exit from injection tubes. Fix injection tubes with the ordered effort of an inhaling.
6. Establish the exhaust silencer of supply of air and the resonator channel.
7. Connect a cable of negative weight to the accumulator.
8. If there are hours, expose time and set a security code of a radio receiver.