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


3.6.5. System of preliminary warming up


On the cold engine spontaneous ignition temperature only due to compression therefore preheat of fuel mix is necessary is not reached.

For this purpose the glow plug is screwed in each combustion chamber. The glow plug generally consists of the case with the heating core pressed in it. When giving tension the heater winding in a core within several seconds is warmed up to the temperature over +850 °C thanks to what warming up duration before start seldom lasts more, than 10 seconds. At attenuation of a control lamp of a warming up on the dashboard it is possible to make start of the engine.

For acceleration of a warming up of the engine heat proceeds also after its start. Duration of preliminary heat is defined by the control unit depending on temperature of cooling liquid. The control unit is behind the central console under an air duct.

Information on temperature of the engine comes to the control unit from the sensor of temperature of cooling liquid. On the basis of the obtained data the control unit determines duration and size of current.

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