In cases where you are aware of irregular signs on your vehicle, you are right to be preoccupied, because a car represents a massive annual budget and sudden malfunctions don’t reduce the bill. So what if you sense that you have a leaking injector on your Audi Rs6? You almost certainly figured it out thanks to black/oily drips along your engine, or a troubled idle, or uncommon black smoke. These three signs of illness are the main signs of a leaking injector. As this failure can lead to more significant engine concerns on your car, we chose to prepare this article content to help you validate the failure of a leaking injector and handle it correctly. To do so, we will first of all look into the circumstance of gasoline injectors and then at those of diesel injectors Audi Rs6.

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Leaking injector on my petrol Audi Rs6

It is crucial to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two kind 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 Audi Rs6: The different leaks

It should be known that injector leaks on a Audi Rs6 equipped with a petrol engine are rather infrequent. This is resulting from the much lower pressure in the petrol intake systems. Nevertheless, there are two kind 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 linked to the fuel rail, an O-ring will be involved in this.
  • Leak injector of the lower part:
    Finally, you may experience a leak coming from the lower portion 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 Audi Rs6

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Audi Rs6: The different leaks

In the circumstance of leaking diesel injectors on your Audi Rs6, there are three several kind of leaks:

  • Leakage from the injector inlet:
    In this instance, it is an inlet pipe that will deform after a while, in most cases the leak will be at the clamping point.
  • Injector return leakage:
    As its name reveals, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Audi Rs6 will be the result of an O-ring or its plastic tip that leaks.
  • Injector base leak:
    This injection leak is one of the most troublesome, it is the junction between the engine and the injector nose that leaks at a copper seal, you should find an air noise and a compression loss.
  • If after verifying you have oil leaking but it does not come from your injectors, we suggest you to read this article content on the presence of oil leaking on your Audi Rs6.

Leaking injector on my Audi Rs6, how to fix the leak

And to finish, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is associated, as we have seen sooner, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is carried out…
  • 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 oftentimes be limited to swapping the seals that have failed:

  • Discover the source of the leak
  • Dismantle the injector in question
  • Change the corresponding seal kit
  • Reassemble the assembly and tighten with a torque wrench in accordance with the manufacturer’s standards.

In all cases, these interventions are not specifically complicated, but if you have the smallest doubt in the treatment of your injector that leaks on your Audi Rs6, we suggest you to get closer to your auto technician to avoid any bad manipulation that could critically harm the condition of your Audi Rs6.

In the event that you have any additional questions about the Audi Rs6, do not hesitate to consult our Audi Rs6 category.