Solenoid nozzle (0280150560В or ZMZ DEKA IA9Z61) - an electromechanical valve that works on the principle of an electromagnet

When voltage is applied to the nozzle winding, an electromagnetic field is created that draws the core along with the locking device needle and passes fuel to the spray holes.

An additional fuel filter is installed in the injector inlet.

Faults for which the injectors are checked:

  • - difficulty starting the engine;
  • - unstable engine operation;
  • - idle speed reduced or increased;
  • - jerks and dips in the engine;
  • - insufficient engine power;
  • - glow ignition;
  • - increased content of CO and CH.

Checking the injector without removing it from the engine

To check the health of the injector, turn off the ignition and remove the negative terminal of the battery.

Checking and replacing the engine injectors of a Gazelle car

With an awl or a thin screwdriver, snapping off the spring clip of the shoe

Checking and replacing the engine injectors of a Gazelle car

Disconnect the connector from the injector.

Checking and replacing the engine injectors of a Gazelle car

Having connected an ohmmeter to the injector terminals, we measure the resistance of the winding

Checking and replacing the engine injectors of a Gazelle car

The winding of a working injector should have a resistance of 15–16 ohms between the central and side pins of the connector

Further tests are carried out on the nozzle removed from the engine.

Removing the nozzle

Relieve the fuel pressure in the fuel system.

Turn off the ignition and remove the "negative" terminal of the battery.

Disconnect the idle speed controller connector.

Remove the air supply duct and the air damper cable from the throttle pipe.

Checking and replacing the engine injectors of a Gazelle car

Use a screwdriver to loosen the clamp of the lower (outlet) hose of the idle speed regulator.

Checking and replacing the engine injectors of a Gazelle car

We loosen the clamp with a screwdriver, remove the hose of the crankcase ventilation system.

Checking and replacing the engine injectors of a Gazelle car

Loosen the clamp with a screwdriver, remove the vacuum brake booster hose

Checking and replacing the engine injectors of a Gazelle car

Loosen the clamp with a screwdriver, remove the fuel pressure regulator hose

Checking and replacing the engine injectors of a Gazelle car

Using a 13 key, unscrew the nut that secures the ground wire tip to the first intake manifold stud.

Checking and replacing the engine injectors of a Gazelle car

Similarly, disconnect the wire from the last intake manifold stud.

Then, turn away wrench 13 the remaining nuts of the intake manifold studs, remove the receiver.

Checking and replacing the engine injectors of a Gazelle car

Loosen the clamp with a screwdriver

Checking and replacing the engine injectors of a Gazelle car

Remove the supply hose from the fitting of the fuel rail.

Checking and replacing the engine injectors of a Gazelle car

We loosen the clamp with a screwdriver, remove the crankcase ventilation hose from the idling system pipe.

Checking and replacing the engine injectors of a Gazelle car

Loosen the clamp with a screwdriver, remove the drain hose from the fitting of the fuel pressure regulator.

Checking and replacing the engine injectors of a Gazelle car

Using a 10 key, we unscrew the two screws securing the fuel rail to the intake manifold and remove the rail

Checking and replacing the engine injectors of a Gazelle car

Prying off the spring latch of the block with an awl, disconnect the connector from the nozzle

Checking and replacing the engine injectors of a Gazelle car

Remove the nozzle from the manifold

Install the nozzle in reverse order

Checking the injector removed from the engine

Checking and replacing the engine injectors of a Gazelle car

When the battery voltage is applied briefly, a distinct click should be heard.

Checking and replacing the engine injectors of a Gazelle car

Remove the sealing collar from the nozzle flange and connect the nozzle with a rubber hose with a clamp to a source of compressed air (a compressor with a pressure gauge or a foot pump).

Checking and replacing the engine injectors of a Gazelle car

Having lowered the nozzle sprayer into kerosene, we supply air at a pressure of 3 kgf / cm 2.

Checking and replacing the engine injectors of a Gazelle car

For a working nozzle, air should not pass through the atomizer.

We check the quality of atomization with a fuel injector, for which: We connect the "ground" wires that were removed from the intake manifold studs during the removal of the injectors.

Checking and replacing the engine injectors of a Gazelle car

By tightening the nuts with a 13 wrench, we ensure reliable contact with the ground

Checking and replacing the engine injectors of a Gazelle car

We put the inlet hose of the fuel rail on the nozzle flange and tighten the clamp with a screwdriver

We connect two wires with a length of at least 1 meter to the injector terminals.

After making sure that the ignition is off, we connect the "negative" terminal of the battery.

Turn on the ignition and, after waiting for the fuel pump to stop working, turn off the ignition.

Having fixed the nozzle over the container, we connect the wires to the battery terminals for a short time.

Checking and replacing the engine injectors of a Gazelle car

The nozzle should produce a conical jet of finely atomized fuel.

Checking and replacing the engine injectors of a Gazelle car

If the nozzle does not work, reverse the polarity of the wires.

Relieve the pressure in the fuel line by applying voltage to the injector. Drain gasoline into a suitable container

We replace the defective nozzle.

Install all parts in reverse order.