Whenever you are alert of irregular symptoms on your car, you are right to be intrigued, because a car represents a big annual budget and unforeseen malfunctions don’t reduce the bill. So what if you feel like you have a leaking injector on your Nissan NV200? You most likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or strange black smoke. These three symptoms are the main signals of a leaking injector. As this troubles can lead to more critical engine complications on your car, we made a decision to prepare this content to help you ensure the failure of a leaking injector and handle it correctly. To achieve this, we will first of all take a look at the circumstance of gasoline injectors and then at those of diesel injectors Nissan NV200.
Leaking injector on my petrol Nissan NV200
It is fundamental to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two sort of engines makes the injection different. 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 NV200: The different leaks
It should be said that injector leaks on a Nissan NV200 equipped with a petrol engine are rather infrequent. This is caused by 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 conceivable 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:
At last, you may experience a leak coming from the lower portion 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 NV200
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 NV200: The different leaks
In the circumstance of leaking diesel injectors on your Nissan NV200, there are three several sort of leaks:
- Leakage from the injector inlet:
In this case, 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 relates to the management of the fuel return in the injector, this time the injector that leaks on your Nissan NV200 will be caused by an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most bothersome, 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 verifying you have oil leaking but it does not come from your injectors, we encourage you to consult this content on the presence of oil leaking on your Nissan NV200.
Leaking injector on my Nissan NV200, 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. Oftentimes a leak is associated, as we have seen prior to this, to a worn seal as a result 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…
- 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 swapping the seals that have failed:
- Locate the source of the leak
- Dismantle the injector in question
- Change the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all situations, these interventions are not inevitably complicated, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Nissan NV200, we encourage you to get closer to your auto mechanic to avoid any bad handling that could seriously harm the condition of your Nissan NV200.
To get more tips on the Nissan NV200, take a look at the Nissan NV200 category.
