Whenever you are informed of unusual symptoms on your automobile, you are right to be worried, because a car represents a massive annual budget and unpredicted malfunctions don’t reduce the costs. So what if you feel like you have a leaking injector on your Toyota 86? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or unconventional black smoke. These three signs of illness are the main symptoms of a leaking injector. As this troubles can bring about more critical engine problems on your car, we made a decision to produce this article content to help you ensure the failure of a leaking injector and deal with it correctly. To do this, we will first check out the case of gasoline injectors and then at those of diesel injectors Toyota 86.

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Leaking injector on my petrol Toyota 86

It is vital 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 main 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 Toyota 86: The different leaks

It should be said that injector leaks on a Toyota 86 equipped with a petrol engine are rather infrequent. This is because of the much lower pressure in the petrol intake systems. Even so, there are two types of leaks:

  • Leakage from the top of the injector:
    It is conceivable 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:
    Finally, you may encounter 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 sooner.

Leaking injector on my diesel Toyota 86

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Toyota 86: The different leaks

In the case of leaking diesel injectors on your Toyota 86, there are three several types 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 implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Toyota 86 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 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 examining you have oil leaking but it does not come from your injectors, we encourage you to read this article content on the presence of oil leaking on your Toyota 86.

Leaking injector on my Toyota 86, how to fix the leak

And at last, 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 due to the pressures endured. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is done…
  • 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 frequently be restricted to swapping the seals that have failed:

  • Locate 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 automatically difficult, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Toyota 86, we encourage you to get closer to your motor mechanic to avoid any bad manipulation that could severely harm the condition of your Toyota 86.

In the event that you have any further questions about the Toyota 86, do not hesitate to consult our Toyota 86 category.