Verification conditions
Fuel pressure should be ok, check:
The injectors are installed in the fuel rail and the fuel line is connected.
Position the nozzle so that the sprayed fuel is completely captured by the measuring container.
Remove fuse SB 33 located in socket F 33 of the fuse box.
Connect the right contact of the F33 fuse socket to the positive terminal of the battery.
Connect one of the injector contacts to the engine ground.
Connect the second contact of the connector of the injector being tested via a push-button switch to the positive terminal of the battery.
Press and hold the remote control switch button for 30 seconds.
Repeat the test on other injectors. For other injectors, you should use other measuring capacities.
Compare the volume of injected fuel. Set value: 85-105 ml for each nozzle.
When checking the amount of fuel injected, the shape of the sprayed fuel torch is also checked. The torch shape must be the same for all nozzles.
The jet of sprayed fuel should be the same for all injectors.
If the measured value of the fuel quantity for one or more injectors goes beyond the nominal value range in one direction or another, replace the faulty injector.
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