In cases where you are alert of abnormal symptoms on your vehicle, you are right to be concerned, because a car represents a big annual budget and unforeseen malfunctions don’t reduce the bill. So what if you find that you have a leaking injector on your Infiniti Q60? You most likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or unusual black smoke. These three symptoms are the main indicators of a leaking injector. As this failure can bring about more significant engine complications on your car, we made a decision to publish this content page to help you ensure the failure of a leaking injector and treat it correctly. To accomplish this, we will first of all take a look at the case of gasoline injectors and then at those of diesel injectors Infiniti Q60.
Leaking injector on my petrol Infiniti Q60
It is fundamental to know that the injectors on petrol and diesel engines are different, in fact, the difference in combustion between these two sort of engines makes the injection different. The biggest 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 Q60: The different leaks
It should be known that injector leaks on a Infiniti Q60 equipped with a petrol engine are rather rare. This is resulting from the much lower pressure in the petrol intake systems. Even so, 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 component 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 come from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Infiniti Q60
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 Infiniti Q60: The different leaks
In the case of leaking diesel injectors on your Infiniti Q60, there are three several sort of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform with 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 Q60 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 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 checking you have oil leaking but it does not come from your injectors, we recommend you to browse this content page on the existence of oil leaking on your Infiniti Q60.
Leaking injector on my Infiniti Q60, how to fix the leak
And to finish, we’re going to take a look at how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen sooner, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is enormous, 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 oftentimes be restricted to replacing the seals that have failed:
- Locate the source of the leak
- Take apart 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 cases, these interventions are not specifically difficult, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Infiniti Q60, we recommend you to get closer to your mechanic to avoid any bad manipulation that could seriously harm the condition of your Infiniti Q60.
If you want more guides on the Infiniti Q60, go to our Infiniti Q60 category.
