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What are the problems that can occur with the injection system of a Renault/Dacia?

Model: Dacia Duster HM, MK 2 - Years 2017-2024
Part: Fuel injectors

In this video, we will see what problems can occur in the injection system of a Renault or Dacia car, such as the Duster shown in the image. The first cause is obviously dirty or faulty injectors: injectors can become clogged due to dirt deposits or fuel residues, causing irregular fuel delivery. Faulty injectors can spray an irregular amount of fuel, affecting engine performance and fuel consumption. Another problem could be a faulty fuel pump, which prevents injectors from reaching the correct pressure, causing power loss and starting difficulties. Also, faulty sensors, such as the fuel pressure sensor or air flow sensor, which monitor the injection system, can send incorrect information causing problems. Problems with the electronic control unit, dirty fuel filter, and common wiring issues should not be underestimated. Symptoms of injection problems include difficulty starting the engine, power loss, excessive fuel consumption, and the engine warning light illuminated.

Posted on 29 September 2025 by ScegliAuto

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