Having a problem with your motor vehicle is basic, because regrettably recent vehicles are more and more difficult and consequently subject to more and more possible breakdowns. On this page we’re going to try to help you to resolve an injection problem on your Mercedes Classe E . This is a problem that is particularly irritating because it can sooner or later bring your car to non starting or broken engine unit. To achieve this, first we will see how injection functions, then, what are the different problems that can exist on a Mercedes Classe E injectors , and at last, how to resolve them.

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What is the aim of the injection of a Mercedes Classe E?

So we commence our article by promptly detailing how an injection system functions so that you have all the info you need to figure out the failures affiliated with it. < br>
The injection system of a Mercedes Classe E controls the fuel intake into the engine unit , it replaces the old carburettors. It has the benefit to be a lot more precise and to come, under pressure, to discharge the fuel in the engine unit. The injection pump takes care of pressurizing the fuel and transferring it to the injectors, and the injectors will release the fuel in the form of micro-drops into the cylinders of your Mercedes Classe E. The benefit of fuel injection is to have a much more precise dosage than a carburettor and to enable a better air/fuel mixture and consequently a better combustion.

What are the different injection problems on Mercedes Classe E?

Now in this second component, we are going to discover the different injection problems and their manifestations that you may possibly encounter on your Mercedes Classe E .

Injection pump problems Mercedes Classe E

To start, we will see the injection pump problems on your Mercedes Classe E, there are not many of them, they are often recurrent but we will detail them below:

  • Electronic problem of the high pressure pump: If you have an electronic problem, the pressure in your injection system might be too high or too low which will trigger a bad air/fuel mixture and consequently a bad combustion and thus alter the performance of the engine unit of your Mercedes Classe E.
  • Leakage from the injection pump of your Mercedes Classe E: If you have a major leakage problem, the consequence will be much the same as if you have a lack of pressure, you will not have enough pressure and consequently the combustion of your fuel will not be good

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Regarding the outcomes and manifestations of a fuel pump problem on a Mercedes Classe E , you will undoubtedly feel, a lack of power, your engine unit grazing, dark smoke emissions…

Injectors problems Mercedes Classe E

Now we move on to the injector problems on Mercedes Classe E . Injectors are the end of your injection system, here are the different problems you may possibly encounter:

  • Dirty Mercedes Classe E injectors: This can happen due to poor fuel quality, they will let less fuel through or more if they are totally clogged. So you will potentially have one or more cylinders that are not working effectively.
  • Leaky Mercedes Classe E injector: It’s often at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
  • Injector Mercedes Classe E HS: This is the circumstance when your injectors are totally clogged or when you have an electronic problem, it will not let anything go.

Concerning the symptoms of injector problems on your Mercedes Classe E it is about the same as for a faulty injection pump. You may possibly encounter problems with starting, throttle response, power loss, and smoke emission.

How to fix an injection problem on a Mercedes Classe E?

To finish our article content on the injection problems on Mercedes Classe E , we will try to give you the solutions that exist to resolve these problems.
If after a precise investigation it’s your injection pump that is the reason of your problems, it will regrettably be very difficult to intervene on the issue without changing the component, this change often goes with the replacement of the injectors, and in some cases the tank, it will take between 2000 and 3000 euros for the whole, try to get some diagnostics and estimates before starting any repair.
Regarding a problem with an injector there are different solutions based on your concerns, here they are:

  • Dirty injector: You can clean the injectors of your Mercedes Classe E, do not hesitate to consult our article on this subject to get the process. If it doesn’t work, you will have to change them.
  • Leaky injector: The change and the purchase of a joint kit will only cost you a few tens of euros, but you still need to have the ability to change it, do not think twice to consult our article on the injectors that leak on Mercedes Classe E, to have all the solutions available to you.
  • Injector HS: Finally, last solution, your injector is damaged or doesn’t work anymore, generally speaking, the replacement of an injector costs around 500 euros labor included.

If you need more guides on the Mercedes Classe E, go to our Mercedes Classe E category.