- A) With the engine running or when turning it over with a starter, use a phonendoscope to make sure by ear (sound of injected fuel) in the performance of the injectors, making sure that the frequency of injections is proportional to the frequency of rotation of the engine crankshaft.
- b) In the absence of a phonendoscope, you can check the performance of the nozzles by touching them with your finger or a screwdriver.
If there is no sound or if it is unusual in nature, check the wiring, connector, injector, additional injector resistance, or the presence of a control signal from the electronic control unit.
2. Check the injector resistance. Disconnect the injector connector and use an ohmmeter to measure the resistance of the injector. Rated resistance at 20°C: 13.4-14.2 Ohm.
If the resistance value is out of range, replace the injector. Connect the injector connector.