Mazda 626

1991-1998 of release

Repair and operation of the car

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 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 gas distribution
      3.6.5. System of preliminary warming up
      3.6.6. Check of the device of preliminary warming up
      3.6.7. Removal of air from fuel system
      3.6.8. Check and replacement of the electromagnetic valve of a cut-off 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 half shafts
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electrical circuitries
+ 14. Useful tips


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, then it indicates the corresponding defective nozzle.

The defective nozzle can be defined, consistently weakening cap nuts and on bystry to the course (at an engine warming up). If after weakening of a cap nut speed does not change, it indicates the corresponding defective nozzle. The nozzle can be checked by means of the manometer. (Work in a workshop; the required value of a pressure of injection: 135 bars).

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;
  – increase in fuel consumption.


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


At the same time contents of electronic memory devices, for example memory of defects of the engine or a code of the radio receiver are 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 the wooden pallet.


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



Observe adjusting situation.

The banner 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 65 N. of m. Establish 4 new wavy laying (4) and pro-masonry washers (3).
2. Put injection tubes, tighten cap nuts with 25 N.' effort of m.
3. Put tubes of removal of fuel with new laying and tighten nuts with effort 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. Install the muffler of air supply and the channel of the resonator.
7. Connect a cable of negative weight to the accumulator.
8. If there are hours, expose time and set a security code of the radio receiver.

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