If you are alert of abnormal symptoms on your vehicle, you are right to be intrigued, because a car represents a huge annual budget and unexpected breakdowns don’t reduce the expenses. So what if you find that you have a leaking injector on your Mercedes AMG GT? You probably figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or abnormal black smoke. These three manifestations are the main signs of a leaking injector. As this failure can bring on more serious engine concerns on your car, we thought we would prepare this content page to help you ensure the failure of a leaking injector and treat it correctly. To accomplish this, we will initially look at the circumstance of gasoline injectors and then at those of diesel injectors Mercedes AMG GT.
Leaking injector on my petrol Mercedes AMG GT
It is fundamental to know that the injectors on petrol and diesel engines are different, the truth is, the difference in combustion between these two kind of engines makes the injection different. The biggest 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 AMG GT: The different leaks
It should be mentioned that injector leaks on a Mercedes AMG GT equipped with a petrol engine are pretty rare. This is due to 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 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 suffer 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 sooner.
Leaking injector on my diesel Mercedes AMG GT
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 AMG GT: The different leaks
In the circumstance of leaking diesel injectors on your Mercedes AMG GT, there are three different kind of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform over time, usually the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Mercedes AMG GT will be caused 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 find an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we recommend you to consult this content page on the presence of oil leaking on your Mercedes AMG GT.
Leaking injector on my Mercedes AMG GT, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Very often a leak is connected, as we have seen sooner, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some measures:
- 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 restricted to replacing the seals that have failed:
- Find 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 necessarily complicated, but if you have the slightest doubt in the treatment of your injector that leaks on your Mercedes AMG GT, we recommend you to get closer to your repair shop to avoid any bad manipulation that could critically harm the condition of your Mercedes AMG GT.
Whenever you have any further questions about the Mercedes AMG GT, do not hesitate to consult our Mercedes AMG GT category.
