In the event that you are informed of irregular signs on your vehicle, you are right to be concerned, because a car represents a massive annual budget and sudden breakdowns don’t reduce the costs. So what if you think that you have a leaking injector on your Lincoln MKX? You probably figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or abnormal black smoke. These three symptoms are the main indicators of a leaking injector. As this problem can cause more critical engine trouble on your car, we decided to publish this article content to help you ensure the failure of a leaking injector and handle it correctly. To accomplish this, we will first take a look at the case of gasoline injectors and then at those of diesel injectors Lincoln MKX.
Leaking injector on my petrol Lincoln MKX
It is important to know that the injectors on petrol and diesel engines are distinct, in fact, the difference in combustion between these two kind of engines makes the injection distinct. The key 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 Lincoln MKX: The different leaks
It should be said that injector leaks on a Lincoln MKX equipped with a petrol engine are pretty rare. 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 possible 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 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 Lincoln MKX
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 Lincoln MKX: The different leaks
In the case of leaking diesel injectors on your Lincoln MKX, there are three different kind of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform along with time, generally the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Lincoln MKX will be brought on 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 examining you have oil leaking but it does not come from your injectors, we suggest you to browse this article content on the existence of oil leaking on your Lincoln MKX.
Leaking injector on my Lincoln MKX, 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. Oftentimes a leak is connected, as we have seen prior to this, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is carried out…
- Covering you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Relating to the repair part of your leak, it will regularly be restricted to swapping the seals that have failed:
- Situate 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 respect with the manufacturer’s standards.
In all cases, these interventions are not automatically complicated, but if you have the smallest uncertainty in the treatment of your injector that leaks on your Lincoln MKX, we suggest you to get closer to your auto mechanic to avoid any bad manipulation that could critically harm the condition of your Lincoln MKX.
To find more tips on the Lincoln MKX, take a look at the Lincoln MKX category.
