If you are aware of abnormal symptoms on your car, you are right to be intrigued, because a car represents a huge annual budget and sudden malfunctions don’t reduce the bill. So what if you find that you have a leaking injector on your Mercedes Benz GLE Class? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or uncommon black smoke. These three manifestations are the main signals of a leaking injector. As this problem can lead to more critical engine complications on your car, we thought we would publish this content page to help you confirm the failure of a leaking injector and treat it correctly. To achieve this, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors Mercedes Benz GLE Class.
Leaking injector on my petrol Mercedes Benz GLE Class
It is fundamental 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 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 Mercedes Benz GLE Class: The different leaks
It should be noted that injector leaks on a Mercedes Benz GLE Class equipped with a petrol engine are rather infrequent. This is because 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 possible 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 part 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 Mercedes Benz GLE Class
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 Mercedes Benz GLE Class: The different leaks
In the circumstance of leaking diesel injectors on your Mercedes Benz GLE Class, there are three several kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform in the long run, usually the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Mercedes Benz GLE Class will be caused by an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most annoying, 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 advise you to consult this content page on the presence of oil leaking on your Mercedes Benz GLE Class.
Leaking injector on my Mercedes Benz GLE Class, 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 connected, as we have seen prior to this, to a worn seal because 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 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.
Regarding the repair part of your leak, it will frequently 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 cases, these interventions are not necessarily complicated, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Mercedes Benz GLE Class, we advise you to get closer to your mechanic to avoid any bad manipulation that could severely harm the condition of your Mercedes Benz GLE Class.
If perhaps you have any additional questions about the Mercedes Benz GLE Class, do not hesitate to consult our Mercedes Benz GLE Class category.
