In the event you are alert of unusual signs on your car, you are right to be worried, because a car represents a huge annual budget and unexpected breakdowns don’t lower the bill. So what if you feel like you have a leaking injector on your Dacia Logan? You probably figured it out thanks to black/oily drips along your engine, or a disturbed idle, or unusual black smoke. These three manifestations are the main signs of a leaking injector. As this failure can bring on more significant engine concerns on your car, we decided to publish this article to help you verify the failure of a leaking injector and handle it properly. To do this, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors Dacia Logan.

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Leaking injector on my petrol Dacia Logan

It is vital to know that the injectors on petrol and diesel engines are different, the truth is, the difference in combustion between these two types of engines makes the injection different. The key difference lies in the pressure experienced 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 Logan: The different leaks

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

  • Leakage from the top of the injector:
    It is possible that you have a leak from the top of the injector, this is the component that is attached to the fuel rail, an O-ring will be involved in this.
  • Leak injector of the lower part:
    At last, you may experience 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 previously.

Leaking injector on my diesel Dacia Logan

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure generates 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 Logan: The different leaks

In the circumstance of leaking diesel injectors on your Dacia Logan, there are three different types of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform over time, generally the leak will be at the clamping point.
  • Injector return leakage:
    As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Dacia Logan will be caused by an O-ring or its plastic tip that leaks.
  • Injector base leak:
    This injection leak is one of the most annoying, it is the junction between the engine and the injector nose that leaks at a copper seal, you should encounter an air noise and a compression loss.
  • If after verifying you have oil leaking but it does not come from your injectors, we advise you to consult this article on the existence of oil leaking on your Dacia Logan.

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

And finally, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is linked, as we have seen sooner, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some measures:

  • Lower the pressure before any work is completed…
  • Covering 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 limited to changing the seals that have failed:

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

In all cases, these interventions are not inevitably complicated, but if you have the smallest doubt in the treatment of your injector that leaks on your Dacia Logan, we advise you to get closer to your auto technician to avoid any bad manipulation that could critically harm the condition of your Dacia Logan.

To find more tips on the Dacia Logan, take a look at the Dacia Logan category.