In the event that you are aware of unusual signs on your vehicle, you are right to be intrigued, because a car represents a massive annual budget and sudden breakdowns don’t reduce the bill. So what if you feel as if you have a leaking injector on your Volkswagen Arteon? You likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or uncommon black smoke. These three manifestations are the main indicators of a leaking injector. As this problem can end up in more critical engine trouble on your car, we thought we would publish this article content to help you validate the failure of a leaking injector and treat it correctly. To achieve this, we will initially take a look at the circumstance of gasoline injectors and then at those of diesel injectors Volkswagen Arteon.


Leaking injector on my petrol Volkswagen Arteon

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 kind 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 Volkswagen Arteon: The different leaks

It should be noted that injector leaks on a Volkswagen Arteon equipped with a petrol engine are pretty rare. This is caused by the much lower pressure in the petrol intake systems. Even so, there are two kind of leaks:

  • Leakage from the top of the injector:
    It is plausible that you have a leak from the top of the injector, this is the portion 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 suffer a leak coming from the lower part of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen before.

Leaking injector on my diesel Volkswagen Arteon

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 Volkswagen Arteon: The different leaks

In the circumstance of leaking diesel injectors on your Volkswagen Arteon, there are three different kind of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform as time passes, in most cases the leak will be at the clamping point.
  • Injector return leakage:
    As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen Arteon will be a consequence of 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 experience an air noise and a compression loss.
  • If after examining you have oil leaking but it does not come from your injectors, we advise you to read this article content on the existence of oil leaking on your Volkswagen Arteon.

Leaking injector on my Volkswagen Arteon, how to fix the leak

And at last, we’re going to take a look at how to fix a leaking injector on your car. Oftentimes a leak is connected, as we have seen prior to this, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some safety measures:

  • 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.

Relating to the repair part of your leak, it will frequently 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 set up and tighten with a torque wrench in accordance with the manufacturer’s standards.

In all situations, these interventions are not necessarily very hard, but if you have the tiniest doubt in the treatment of your injector that leaks on your Volkswagen Arteon, we advise you to get closer to your motor mechanic to avoid any bad handling that could seriously harm the condition of your Volkswagen Arteon.

If you need more guides on the Volkswagen Arteon, go to our Volkswagen Arteon category.