In the event you are aware of irregular symptoms on your automobile, you are right to be intrigued, because a car represents a huge annual budget and surprising breakdowns don’t reduce the expenses. So what if you sense that you have a leaking injector on your Audi A2? You likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or abnormal black smoke. These three manifestations are the main symptoms 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 verify the failure of a leaking injector and handle it correctly. To do this, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Audi A2.

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Leaking injector on my petrol Audi A2

It is essential to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two types of engines makes the injection different. The biggest 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 A2: The different leaks

It should be said that injector leaks on a Audi A2 equipped with a petrol engine are rather infrequent. 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 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 portion of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen before.

Leaking injector on my diesel Audi A2

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Audi A2: The different leaks

In the case of leaking diesel injectors on your Audi A2, there are three different types of leaks:

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform in the long run, generally the leak will be at the clamping point.
  • Injector return leakage:
    As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Audi A2 will be brought on 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 verifying you have oil leaking but it does not come from your injectors, we suggest you to browse this article content on the existence of oil leaking on your Audi A2.

Leaking injector on my Audi A2, how to fix the leak

And at last, we’re going to look at how to fix a leaking injector on your car. Oftentimes a leak is associated, as we have seen sooner, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some measures:

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

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

  • Find 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 automatically complicated, but if you have the smallest hesitation in the treatment of your injector that leaks on your Audi A2, we suggest you to get closer to your repair shop to avoid any bad manipulation that could critically harm the condition of your Audi A2.

To discover more tips on the Audi A2, take a look at the Audi A2 category.