Mazda 323

since 1985 release

Repair and operation of the car

Mazda 323

+ Introduction
+ Petrol engines
+ Engine lubrication system
+ Engine cooling system
- System of ignition
   Security measures during the work with electronic system of ignition
   Check of the coil of ignition
   Check of a cable of ignition
   Check/adjustment of the moment of ignition
   Removal and installation of the distributor of ignition
   Spark plugs
   Candles for MAZDA 323
+ Power supply system, carburetor, system of injection of fuel
+ Diesel engine
+ System of production of the fulfilled gases
+ Coupling
+ Manual transmission
+ Automatic transmission
+ Suspension bracket and system of steering
+ Brake system
+ Wheels and tires, body, coloring of the car, care of the car
+ System of electric equipment
+ Heater, system of lighting, devices
+ Governing bodies and methods of operation
+ Electric circuits


System of ignition

The system of ignition develops in each cylinder of the engine in necessary timepoint a spark. The spark ignites fuel-air mix. In the ignition coil for this purpose tension of the battery of 12 V will be transformed to tension over 30000 Century. The diesel engine of system of ignition has no as thanks to high extent of compression air heats up so that injectable fuel ignites.

All carburetor engines and the 1,4 l injector engine are equipped with transistor system of ignition. Engines with system of injection of fuel are equipped with electronic system of ignition. The system of ignition consists from:

  • spark plugs
  • ignition cables
  • ignition coils
  • the ignition distributor with the runner, Hall's sensor and the monitor

Tension developed in the ignition coil moves via the runner of the distributor and cables of ignition to the corresponding spark plugs. On electrodes of candles the spark which ignites fuel-air mix in cylinders slips. The ignition moment at increase in speed has to be displaced automatically in the direction of early ignition. This shift in transistor system of ignition is carried out in the distributor at the expense of centrifugal small weights and at the expense of vacuum (a vacuum hose from an inlet pipe to the ignition distributor). In electronic system of ignition the microprocessor which is built in the distributor calculates the optimum moment of ignition depending on speed and degree of loading of the engine. Besides, the processor provides shutdown of ignition. The problem of the distributor consists in distributing ignition current in the set order between cylinders, and by means of Hall's sensor to issue information on speed and the moment of ignition in the monitor ignition.

Engines with system of injection of fuel are equipped with electronic system of ignition. The monitor is united by ignition with the monitor injection. The microprocessor operates the ignition moment on the basis of the field of characteristics which is written down in his memory.

In parametrical system of ignition the optimum moment of ignition depends on a condition of the engine. Parameters are served by the speed, temperature of the engine and degree of loading (the provision of a butterfly valve and amount of the soaked-up air). It is understood as instant loading of the engine as there is a difference if the car with the speed of 4000 rpm rises uphill or climbs down a mountain.

Necessary characteristics for system of ignition are defined in the course of test at the stand and then agreed with tests in actual practice so optimum value of fuel consumption, composition of the fulfilled gases and riding qualities is reached. The values defined thus are written down in memory of the monitor.

During the works on system of ignition it is necessary to observe security measures.

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