In cases where you are informed of irregular signs on your vehicle, you are right to be intrigued, because a car represents a huge annual budget and unexpected malfunctions don’t lower the costs. So what if you find that you have a leaking injector on your Dacia Dokker? You most likely figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or uncommon black smoke. These three symptoms are the main indicators of a leaking injector. As this failure can lead to more critical engine trouble on your car, we chose to compose this article to help you verify the failure of a leaking injector and handle it properly. To do this, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Dacia Dokker.

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Leaking injector on my petrol Dacia Dokker

It is vital to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two sort of engines makes the injection different. The key difference lies in the pressure undergone by the injectors, on a petrol engine it will vary between 3.5 bars for indirect injection and 120 bars for indirect injection.

Leaking injector on a petrol Dacia Dokker: The different leaks

It should be said that injector leaks on a Dacia Dokker equipped with a petrol engine are pretty infrequent. This is as a result of the much lower pressure in the petrol intake systems. Nevertheless, there are two sort of leaks:

  • Leakage from the top of the injector:
    It is conceivable that you have a leak from the top of the injector, this is the part that is linked to the fuel rail, an O-ring will be involved in this.
  • Leak injector of the lower part:
    Finally, you may suffer a leak coming from the lower part of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen sooner.

Leaking injector on my diesel Dacia Dokker

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system creates very high pressure in the engine, as do the injectors. On these models, the pressure is more than 10 times higher than on the direct injection of car petrol engines, reaching 1800 to 2000 bars.

Leaking injector on diesel Dacia Dokker: The different leaks

In the case of leaking diesel injectors on your Dacia Dokker, there are three different sort of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform along with time, commonly the leak will be at the clamping point.
  • Injector return leakage:
    As its name suggests, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Dacia Dokker will be caused by an O-ring or its plastic tip that leaks.
  • Injector base leak:
    This injection leak is one of the most bothersome, it is the junction between the engine and the injector nose that leaks at a copper seal, you should feel an air noise and a compression loss.
  • If after checking you have oil leaking but it does not come from your injectors, we recommend you to browse this article on the presence of oil leaking on your Dacia Dokker.

Leaking injector on my Dacia Dokker, how to fix the leak

And finally, we’re going to look at how to fix a leaking injector on your car. Very often a leak is connected, as we have seen prior to this, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some measures:

  • Lower the pressure before any work is completed…
  • Masking you to avoid the risk of fuel spillage
  • NEVER work on a running diesel engine injector.

Concerning the repair part of your leak, it will frequently be restricted to changing the seals that have failed:

  • Situate the source of the leak
  • Take apart the injector in question
  • Replace the corresponding seal kit
  • Reassemble the set up and tighten with a torque wrench in accordance with the manufacturer’s standards.

In all situations, these interventions are not specifically complex, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Dacia Dokker, we recommend you to get closer to your mechanic to avoid any bad manipulation that could seriously harm the condition of your Dacia Dokker.

In the event that you have any additional questions about the Dacia Dokker, do not hesitate to consult our Dacia Dokker category.