In cases where you are aware of unusual signs on your automobile, you are right to be concerned, because a car represents a huge annual budget and unforeseen breakdowns don’t lower the expenses. So what if you feel like you have a leaking injector on your Mercedes Benz GLS Class? You likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or strange black smoke. These three signs of illness are the main signals of a leaking injector. As this failure can end up in more critical engine complications on your car, we chose to compose this article to help you ensure the failure of a leaking injector and treat it properly. To do this, we will initially look at the case of gasoline injectors and then at those of diesel injectors Mercedes Benz GLS Class.
Leaking injector on my petrol Mercedes Benz GLS Class
It is important to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two sort of engines makes the injection different. 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 GLS Class: The different leaks
It should be noted that injector leaks on a Mercedes Benz GLS Class equipped with a petrol engine are rather rare. This is caused by the much lower pressure in the petrol intake systems. Nevertheless, there are two sort 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 portion that is linked 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 appear from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Mercedes Benz GLS 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 GLS Class: The different leaks
In the case of leaking diesel injectors on your Mercedes Benz GLS Class, there are three different sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform in the long run, commonly 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 GLS Class 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 troublesome, it is the junction between the engine and the injector nose that leaks at a copper seal, you should experience an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we encourage you to browse this article on the presence of oil leaking on your Mercedes Benz GLS Class.
Leaking injector on my Mercedes Benz GLS Class, how to fix the leak
And at last, we’re going to look at 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 due to the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is done…
- Masking 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 frequently be limited to swapping the seals that have failed:
- Discover the source of the leak
- Take apart the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in respect with the manufacturer’s standards.
In all situations, these interventions are not automatically complicated, but if you have the slightest hesitation in the treatment of your injector that leaks on your Mercedes Benz GLS Class, we encourage you to get closer to your repair shop to avoid any bad handling that could critically harm the condition of your Mercedes Benz GLS Class.
To find more tips on the Mercedes Benz GLS Class, take a look at the Mercedes Benz GLS Class category.
