In the event you are alert of unusual symptoms on your vehicle, you are right to be concerned, because a car represents a massive annual budget and unexpected malfunctions don’t reduce the costs. So what if you think that you have a leaking injector on your Mercedes Benz GLK? You probably figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or abnormal black smoke. These three signs of illness are the main signs of a leaking injector. As this problem can lead to more significant engine concerns on your car, we chose to compose this article content to help you ensure the failure of a leaking injector and handle it correctly. To achieve this, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors Mercedes Benz GLK.
Leaking injector on my petrol Mercedes Benz GLK
It is crucial 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 biggest difference lies in the pressure experienced 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 GLK: The different leaks
It should be known that injector leaks on a Mercedes Benz GLK equipped with a petrol engine are rather infrequent. This is due to the much lower pressure in the petrol intake systems. However, 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 part that is attached 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 portion 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 Mercedes Benz GLK
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 GLK: The different leaks
In the circumstance of leaking diesel injectors on your Mercedes Benz GLK, there are three different sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform after a while, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Mercedes Benz GLK 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 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 examining you have oil leaking but it does not come from your injectors, we encourage you to read this article content on the existence of oil leaking on your Mercedes Benz GLK.
Leaking injector on my Mercedes Benz GLK, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Very often a leak is linked, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is conducted…
- Masking 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 frequently be limited to replacing the seals that have failed:
- Find 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 complex, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Mercedes Benz GLK, we encourage you to get closer to your motor mechanic to avoid any bad manipulation that could seriously harm the condition of your Mercedes Benz GLK.
If perhaps you have any additional questions about the Mercedes Benz GLK, do not hesitate to consult our Mercedes Benz GLK category.
