Hyundai Elantra

since 2000-2004 of release

Repair and car operation

Elantr's Hyundai
+ Petrol engines 1,6, 1,8 and 2,0 of l
+ Diesel engine of 2,0 l
+ greasing System
+ cooling System
- Fuel system
   + Fuel system of petrol engines
   - Fuel system of diesel engines
      General information about system of injection of "Common Rail"
      Characteristics of system of injection
      Control injection of fuel
      Main injection of fuel
      Additional injection of fuel
      Reduction of toxicity of the fulfilled gases
      Fuel system Common Rail
      EDC control system
      Management of the maximum quantity of air arriving in the engine
      The active shock-absorber reducing fluctuations of frequency of rotation of a cranked shaft of the engine
      Engine switching off
      Glow plugs
      Removal and nozzle installation
      Installation of the fuel pump of a high pressure
      Measuring instrument of a consumption of air (Air flow sensor – AFS)
      The sensor of temperature of cooling liquid (ECT)
      Sensor of provision of a camshaft (CMP)
      Sensor of an angle of rotation of a cranked shaft
      The sensor of pressure of fuel in the accumulator of a high pressure (RPS)
      Sensor of temperature of fuel (FTS)
      Valve of adjustment of pressure
      Search and elimination of malfunctions
+ Monitoring systems and decrease in toxicity of the fulfilled gases
+ ignition System
+ System of preliminary heating of the diesel engine
+ Coupling
+ Mechanical transmission
+ Automatic transmission
+ Power shafts, forward and back axes
+ Suspension bracket
+ Steering
+ Brake system
+ Body
+ air Central air
+ Electric equipment
Electric circuits


In Common Rail system special nozzles with hydraulic strengthening and an electric element of start-up (the solenoidal valve) for ensuring giving of the necessary amount of fuel in the combustion chamber are used.

For ensuring exact amount of injected fuel opening of a nozzle should occur very quickly that demands giving of ECU of a high voltage. After complete opening of a needle of a spray the current brought to the solenoidal valve, decreases to size, sufficient for deduction of the solenoidal valve in open situation. The amount of injected fuel is defined by the period of opening of a spray and pressure in system. After tension interruption of supply to the solenoidal valve the needle of a spray falls down and tightly blocks supply of fuel under a high pressure in the combustion chamber.

Functioning check


    Using current-measuring pincers of the device for engine check, check functioning of fuel nozzles. Current-measuring pincers should correspond to the following requirements:
      range of measurements more than 25 And; frequency range more than 100 kHz.
    Connect the socket to a nozzle. Establish current-measuring pincers round a nozzle head, start the engine in a mode of idling and measure a current consumed by a nozzle, and compare a current curve to a curve given on drawing.
  • The size of a phase of consumption of a current (at most 12 And) depends on frequency of rotation of a cranked shaft of the engine.
  • The first site of a curve shows preliminary injection of fuel.
    Check a nozzle on fuel injection. Disconnect the socket from a nozzle and connect to an additional nozzle.
    If thus operation of the engine did not change, the checked nozzle does not inject fuel.
    If operation of the engine changed, means, the checked nozzle is serviceable and injects fuel.
    This check does not allow to establish amount of fuel injected by a nozzle.
    If necessary replace all fuel nozzles. At the switched-off ignition measure supply voltage on contacts 33 (cylinder No. 1), 36 and 39 (cylinder No. 3), 40 (cylinder No. 2) and 37 ECM. Tension: 0 Century. If tension does not correspond demanded, check an electroconducting condition. If electroconducting is serviceable, replace ECM.

Resistance measurement


    Disconnect from a nozzle the electric socket.
    Measure resistance between socket contacts. Resistance: 0,3–0,6 Ohm at temperature 20°С.
    Connect to a nozzle the electric socket.