Diesel Injector Fuel Injector 0445120028 Compatible with Bosch

First, let's say a few words about the monoinjector.  Today, there are fewer and fewer such units, since the system is outdated.  Its essence lies in the installation of only one nozzle - in front of the throttle.  They can be found on old models of foreign cars VW, Audi, Skoda, Seat and others.

Let's describe the algorithm for checking the resistance of an injector on a mono-injector:

check the contacts from the injectors in pairs and compare them with the data from the manual (usually, these values ​​\u1,2b\u1,6bshould be in the range of XNUMX ...  XNUMX ohms);

when checking contacts 1 and 4, you need to make sure that the DTVV (intake air temperature sensor) is working correctly, for this, also use the resistance data from the manual;

if the resistance value is out of range, you need to diagnose the injector in more detail.

Starting nozzle

Often, in the old mono-injector ICEs, in addition to the valve injector, the so-called starting nozzle is also used, the task of which is to give an additional amount of fuel when starting the ICE, especially in cold weather and high ICE speeds, in order to to make it easier to launch.  Its operating time is determined automatically by the ECU (namely, a thermal relay), but usually it is only a few seconds, after which it turns off, since the internal combustion engine starts up and there is no need for its further use.

Its operation is completely similar to the operation of the nozzles in the injector.  During operation, it can also partially or completely fail.  A clear sign of such problems is the fact that a cold ICE starts and immediately stalls.