- If any signs of infringement of serviceability of functioning of the fuel injection system, first check the reliability of a tightening of all compression fittings tract supply system. Make sure that the reason is not a violation of a basic disregard for the implementation of procedures for routine maintenance - check the condition of the air cleaner and the fuel filter, a measurement of working backlashes of valves, the compression pressure in the cylinders, etc. Make sure the hose cross-crankcase ventilation system (see chap. Power supply system and exhaust).
- If after the above checks reveal the cause of the violation is not possible, drive away the car to the service station for Bole detailed diagnosis - in the lower part of the dashboard on the driver's side is the DLC to connect a special scanner, through which it reads fault codes (DTC), board self-diagnostic system detected and recorded in the memory of the processor control unit.
 | Alternatively, read the DTC can be made using a special card equipped with a PC with installed software - to connect a computer to the DLC connector uses a special cable. By reading the code can easily identify the operator even hidden faults. |
 | Remember that any unprofessional intervention into the engine management system carries a risk of irreversible failure of electronic components! |
- Engine idling speed can be measured using a special tachometer for use on diesel engines, but the adjustment of this parameter is not possible. The reason for deviation from the idle speed setpoint can be a violation of serviceability of functioning injectors that in this situation should be cleaned and calibrated. The service life of nozzles is unlimited, but in excess of the value of a vehicle mileage of 100 000 km of the probability of failure increases, - implementation of procedures of repair and calibration of nozzles should be entrusted to specialists Car.
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