In the event you are aware of irregular signs on your automobile, you are right to be intrigued, because a car represents a huge annual budget and unforeseen breakdowns don’t reduce the costs. So what if you find that you have a leaking injector on your Nissan X-trail? You most likely figured it out thanks to black/oily drips along your engine, 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 end up in more serious engine concerns on your car, we chose to publish this article content to help you validate the failure of a leaking injector and handle it properly. To do so, we will first take a look at the case of gasoline injectors and then at those of diesel injectors Nissan X-trail.
Leaking injector on my petrol Nissan X-trail
It is crucial to know that the injectors on petrol and diesel engines are different, in fact, the difference in combustion between these two types of engines makes the injection different. The key 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 Nissan X-trail: The different leaks
It should be said that injector leaks on a Nissan X-trail equipped with a petrol engine are pretty rare. This is caused by the much lower pressure in the petrol intake systems. Nevertheless, 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 connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may experience 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 Nissan X-trail
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 Nissan X-trail: The different leaks
In the case of leaking diesel injectors on your Nissan X-trail, there are three several types of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform along with time, commonly the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Nissan X-trail 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 find an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we suggest you to consult this article content on the existence of oil leaking on your Nissan X-trail.
Leaking injector on my Nissan X-trail, 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. Very often a leak is connected, as we have seen sooner, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is achieved…
- 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 regularly be limited to swapping the seals that have failed:
- Find out the source of the leak
- Take apart 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 complex, but if you have the smallest doubt in the treatment of your injector that leaks on your Nissan X-trail, we suggest you to get closer to your mechanic to avoid any bad manipulation that could seriously harm the condition of your Nissan X-trail.
To get more tips on the Nissan X-trail, take a look at the Nissan X-trail category.
