If you are alert of unusual symptoms on your car, you are right to be worried, because a car represents a huge annual budget and unforeseen malfunctions don’t lower the expenses. So what if you find that you have a leaking injector on your Nissan Versa? You almost certainly figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or strange black smoke. These three manifestations are the main signs of a leaking injector. As this failure can cause more significant engine concerns on your car, we chose to compose this article content to help you validate the failure of a leaking injector and deal with it correctly. To accomplish this, we will first take a look at the case of gasoline injectors and then at those of diesel injectors Nissan Versa.
Leaking injector on my petrol Nissan Versa
It is important to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two kind of engines makes the injection distinct. 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 Nissan Versa: The different leaks
It should be noted that injector leaks on a Nissan Versa equipped with a petrol engine are rather infrequent. This is as a result of the much lower pressure in the petrol intake systems. Nevertheless, there are two kind 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 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 portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Nissan Versa
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Nissan Versa: The different leaks
In the case of leaking diesel injectors on your Nissan Versa, there are three different kind of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform as time passes, usually 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 Versa will be the result of 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 experience 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 Versa.
Leaking injector on my Nissan Versa, 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. Regularly a leak is connected, 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 enormous, specifically on diesel engines. So you will have to take some safety 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.
Concerning the repair part of your leak, it will very often be restricted to replacing 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 automatically difficult, but if you have the smallest doubt in the treatment of your injector that leaks on your Nissan Versa, we suggest you to get closer to your auto technician to avoid any bad manipulation that could severely harm the condition of your Nissan Versa.
To find more tips on the Nissan Versa, take a look at the Nissan Versa category.
