In cases where you are aware of unusual signs on your vehicle, you are right to be concerned, because a car represents a huge annual budget and sudden breakdowns don’t lower the expenses. So what if you find that you have a leaking injector on your Alfa Romeo Gt? You most likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or uncommon black smoke. These three manifestations are the main symptoms of a leaking injector. As this failure can lead to more critical engine trouble on your car, we thought we would prepare this article content to help you validate the failure of a leaking injector and deal with it properly. To accomplish this, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Alfa Romeo Gt.

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Leaking injector on my petrol Alfa Romeo Gt

It is crucial to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two kind of engines makes the injection distinct. 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 Alfa Romeo Gt: The different leaks

It should be said that injector leaks on a Alfa Romeo Gt equipped with a petrol engine are rather rare. This is as a result of 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 portion 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 appear from the junction with the engine and not with the rail as seen sooner.

Leaking injector on my diesel Alfa Romeo Gt

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system produces 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 Alfa Romeo Gt: The different leaks

In the case of leaking diesel injectors on your Alfa Romeo Gt, there are three different kind of leaks:

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform 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 Alfa Romeo Gt 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 troublesome, 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 examining you have oil leaking but it does not come from your injectors, we recommend you to consult this article content on the existence of oil leaking on your Alfa Romeo Gt.

Leaking injector on my Alfa Romeo Gt, 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 prior to this, to a worn seal as a result 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 achieved…
  • Masking 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 regularly be restricted to replacing 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 respect with the manufacturer’s standards.

In all situations, these interventions are not necessarily difficult, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Alfa Romeo Gt, we recommend you to get closer to your motor mechanic to avoid any bad manipulation that could severely harm the condition of your Alfa Romeo Gt.

To get more tips on the Alfa Romeo Gt, take a look at the Alfa Romeo Gt category.