Diesel Injector Fuel Injector 0445120041 Bosch for Daewoo Doosan DV11 65.10401-7002c

The task of the nozzle is to supply fuel to the combustion chamber.  Therefore, the basic breakdown that can occur with it is clogging or its complete failure.  Symptoms of injector malfunction include:

unstable operation of the internal combustion engine at idle;

a significant increase in fuel consumption;

problems with starting the internal combustion engine, especially “cold”;

in some cases, a significant amount of black smoke may appear from the exhaust pipe (if a lot of fuel enters the combustion chamber through a leaking nozzle), and sometimes it is also accompanied by periodic loud pops from the muffler;

loss of the dynamic qualities of the car, expressed in the fact that the car accelerates poorly, it lacks power, jerks are felt while driving even on a flat surface, including when releasing gas and when changing the load value on the internal combustion engine.

These signs, of course, may indicate other problems of the car's power unit, however, if they occur, we advise you to check the nozzles and, if necessary, repair or replace them.

breakdowns in the operation of the injectors entail significant wear of the internal combustion engine, and bring the period of its overhaul closer.

Causes of failure of injector nozzles:

Modern fuel injectors in gasoline internal combustion engines are of two types - electromagnetic and mechanical. The first is a solenoid valve that is controlled by the vehicle's ECU system. When the appropriate signals are given, the valve opens to a certain angle, regulating the amount of fuel supplied to the cylinder. The second only supplies fuel to the channel. In its design there is a needle with a step. When there is enough pressure, the fuel overcomes the resistance of the spring and the needle rises. Accordingly, the atomizer opens and fuel is supplied to the chamber. At present, electromagnetic nozzles have gained wide popularity, as they are more technologically advanced. Therefore, we will continue to consider checking and cleaning using their example.