In cases where you are alert of unusual symptoms on your automobile, you are right to be intrigued, because a car represents a massive annual budget and unexpected malfunctions don’t lower the bill. So what if you feel like you have a leaking injector on your Nissan Titan? You most likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or strange black smoke. These three signs of illness are the main symptoms of a leaking injector. As this problem can produce more significant engine problems on your car, we decided to produce this article content to help you ensure the failure of a leaking injector and treat it correctly. To do so, we will initially look at the circumstance of gasoline injectors and then at those of diesel injectors Nissan Titan.


Leaking injector on my petrol Nissan Titan

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 sort of engines makes the injection distinct. The essential 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 Nissan Titan: The different leaks

It should be said that injector leaks on a Nissan Titan equipped with a petrol engine are rather rare. This is due to 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 plausible that you have a leak from the top of the injector, this is the component that is attached 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 come from the junction with the engine and not with the rail as seen previously.

Leaking injector on my diesel Nissan Titan

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 Nissan Titan: The different leaks

In the circumstance of leaking diesel injectors on your Nissan Titan, there are three different sort of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform over time, commonly the leak will be at the clamping point.
  • Injector return leakage:
    As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Nissan Titan 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 annoying, it is the junction between the engine and the injector nose that leaks at a copper seal, you should encounter 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 consult this article content on the presence of oil leaking on your Nissan Titan.

Leaking injector on my Nissan Titan, how to fix the leak

And to finish, we’re going to look at how to fix a leaking injector on your car. Frequently a leak is associated, as we have seen previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some safety measures:

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

  • Find the source of the leak
  • Dismantle the injector in question
  • Replace the corresponding seal kit
  • Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.

In all situations, these interventions are not specifically difficult, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Nissan Titan, we encourage you to get closer to your auto technician to avoid any bad handling that could severely harm the condition of your Nissan Titan.

If you need more tutorials on the Nissan Titan, go to our Nissan Titan category.