Diesel Injector Fuel Injector 0445120046 Bosch for Cummins Engines

How to check the injector nozzle

1. Checking the power supply to the fuel rail VAZ 2110-2112
We will consider checking the availability of power to the ramp using the example of VAZ 2110, 2111, 2112 cars, as one of the most popular. But first, recall that in the block with contacts, four of them supply power to the injectors, and one (pink wire with a black stripe) is the common "mass". You need to act according to the following algorithm:

2. disconnect the power chip;
set the upper limit of the measured resistance in the region of 200 Ohm on the multimeter (this value depends on the specific model of the tester);
measure in pairs any of the four contacts from the injectors with a common connector.
Resistance value should be within 11,5 ... 15,5 ohms. Remember that this will only measure the resistance of each injector on the ramp.
You can check the nozzle just for vibration. With the engine running a good nozzle should vibrate a little... If there is no tremor, then it is out of order.

3. Checking the power supply from the car's electrical circuit is quite simple, you just need to:
in turn, from each nozzle, you need to disconnect the block of the supply wires;
after that, connect the injector directly to the battery with two pieces of wires;
turn on the ignition.

If the nozzle begins to spray fuel, then the problem must be sought in the wiring.