In cases where you are alert of abnormal 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 bill. So what if you feel like you have a leaking injector on your Infiniti Q50? You most likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unusual black smoke. These three manifestations are the main signs of a leaking injector. As this problem can cause more significant engine concerns on your car, we chose to write this content page to help you validate the failure of a leaking injector and deal with it properly. To accomplish this, we will first of all look into the case of gasoline injectors and then at those of diesel injectors Infiniti Q50.
Leaking injector on my petrol Infiniti Q50
It is crucial to know that the injectors on petrol and diesel engines are distinct, the truth 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 Infiniti Q50: The different leaks
It should be known that injector leaks on a Infiniti Q50 equipped with a petrol engine are rather infrequent. This is because of the much lower pressure in the petrol intake systems. However, 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 part that is attached to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may suffer 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 sooner.
Leaking injector on my diesel Infiniti Q50
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 Infiniti Q50: The different leaks
In the case of leaking diesel injectors on your Infiniti Q50, there are three different kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform over time, in most cases 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 Infiniti Q50 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 encounter an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we recommend you to browse this content page on the presence of oil leaking on your Infiniti Q50.
Leaking injector on my Infiniti Q50, how to fix the leak
And to finish, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is linked, 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 safety measures:
- Lower the pressure before any work is carried out…
- 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:
- Identify 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 accordance with the manufacturer’s standards.
In all situations, these interventions are not specifically complicated, but if you have the smallest doubt in the treatment of your injector that leaks on your Infiniti Q50, we recommend you to get closer to your auto mechanic to avoid any bad handling that could critically harm the condition of your Infiniti Q50.
If perhaps you have any further questions about the Infiniti Q50, do not hesitate to consult our Infiniti Q50 category.
