In the event that you are aware of unusual signs on your automobile, you are right to be worried, because a car represents a massive annual budget and unforeseen breakdowns don’t reduce the bill. So what if you sense that you have a leaking injector on your Toyota Yaris 2? You likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unconventional black smoke. These three manifestations are the main signals of a leaking injector. As this failure can bring on more serious engine trouble on your car, we thought we would prepare this article content to help you ensure the failure of a leaking injector and handle it correctly. To achieve this, we will first of all check out the case of gasoline injectors and then at those of diesel injectors Toyota Yaris 2.

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Leaking injector on my petrol Toyota Yaris 2

It is fundamental to know that the injectors on petrol and diesel engines are distinct, the truth is, the difference in combustion between these two sort 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 Toyota Yaris 2: The different leaks

It should be said that injector leaks on a Toyota Yaris 2 equipped with a petrol engine are pretty rare. This is resulting from the much lower pressure in the petrol intake systems. However, there are two sort 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 connected 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 come from the junction with the engine and not with the rail as seen previously.

Leaking injector on my diesel Toyota Yaris 2

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Toyota Yaris 2: The different leaks

In the case of leaking diesel injectors on your Toyota Yaris 2, there are three different sort of leaks:

  • Leakage from the injector inlet:
    In this instance, it is an inlet pipe that will deform along with time, usually 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 Toyota Yaris 2 will be caused 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 experience an air noise and a compression loss.
  • If after checking you have oil leaking but it does not come from your injectors, we encourage you to read this article content on the existence of oil leaking on your Toyota Yaris 2.

Leaking injector on my Toyota Yaris 2, how to fix the leak

And to finish, we’re going to check out 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 because of the pressures endured. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some measures:

  • Lower the pressure before any work is conducted…
  • 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 very often be limited to changing the seals that have failed:

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

In all cases, these interventions are not inevitably very hard, but if you have the smallest doubt in the treatment of your injector that leaks on your Toyota Yaris 2, we encourage you to get closer to your auto mechanic to avoid any bad manipulation that could seriously harm the condition of your Toyota Yaris 2.

If perhaps you have any further questions about the Toyota Yaris 2, do not hesitate to consult our Toyota Yaris 2 category.