Whenever you are alert of irregular signs on your automobile, you are right to be preoccupied, because a car represents a huge annual budget and sudden breakdowns don’t reduce the expenses. So what if you sense that you have a leaking injector on your Lincoln Navigator? You probably figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or uncommon black smoke. These three manifestations are the main signs of a leaking injector. As this troubles can produce more significant engine trouble on your car, we decided to publish this content page to help you confirm the failure of a leaking injector and deal with it correctly. To accomplish this, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors Lincoln Navigator.
Leaking injector on my petrol Lincoln Navigator
It is important to know that the injectors on petrol and diesel engines are distinct, in fact, the difference in combustion between these two sort of engines makes the injection distinct. 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 Lincoln Navigator: The different leaks
It should be mentioned that injector leaks on a Lincoln Navigator equipped with a petrol engine are rather infrequent. This is due to 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 encounter 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 before.
Leaking injector on my diesel Lincoln Navigator
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Lincoln Navigator: The different leaks
In the circumstance of leaking diesel injectors on your Lincoln Navigator, 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, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Lincoln Navigator 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 feel an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we advise you to browse this content page on the existence of oil leaking on your Lincoln Navigator.
Leaking injector on my Lincoln Navigator, how to fix the leak
And to finish, we’re going to look into how to fix a leaking injector on your car. Very often a leak is connected, as we have seen prior to this, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is done…
- Covering 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:
- Discover the source of the leak
- Dismantle the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all situations, these interventions are not inevitably difficult, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Lincoln Navigator, we advise you to get closer to your mechanic to avoid any bad handling that could significantly harm the condition of your Lincoln Navigator.
To get more tips on the Lincoln Navigator, take a look at the Lincoln Navigator category.
