Having a problem with your motor vehicle is traditional, because regrettably recent vehicles are more and more complex and therefore at the mercy of more and more possible breakdowns. In this article we’re going to try to help you to resolve an injection problem on your Mercedes Classe A 4 . This is a problem that is especially irritating because it can sooner or later bring your car to non starting or broken engine. To do this, first we will find out how injection functions, then, what are the different problems that can exist on a Mercedes Classe A 4 injectors , and finally, how to resolve them.

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What is the intent of the injection of a Mercedes Classe A 4?

So we commence our article by quickly detailing how an injection system functions so that you have all the information you need to discover the failure connected with it. < br>
The injection system of a Mercedes Classe A 4 controls the fuel intake into the engine , it replaces the old carburettors. It has the benefit to be much more precise and to come, under pressure, to launch the fuel in the engine. 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 A 4. The benefit of fuel injection is to have a much more precise dosage than a carburettor and to allow a better air/fuel mixture and therefore a better combustion.

What are the different injection complications on Mercedes Classe A 4?

Now in this second component, we are going to see the different injection complications and their manifestations that you may come across on your Mercedes Classe A 4 .

Injection pump complications Mercedes Classe A 4

To start, we will find out the injection pump complications on your Mercedes Classe A 4, there are not many of them, they are generally frequent but we will highlight 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 cause a bad air/fuel mixture and therefore a bad combustion and thus alter the performance of the engine of your Mercedes Classe A 4.
  • Leakage from the injection pump of your Mercedes Classe A 4: If you have a significant leakage problem, the result will be much the same as if you have a lack of pressure, you will not have enough pressure and therefore the combustion of your fuel will not be good

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Regarding the consequences and manifestations of a fuel pump problem on a Mercedes Classe A 4 , you will certainly experience, a lack of power, your engine grazing, dark smoke emissions…

Injectors complications Mercedes Classe A 4

Now we proceed to the injector problems on Mercedes Classe A 4 . Injectors represent the end of your injection system, here are the different complications you may encounter:

  • Dirty Mercedes Classe A 4 injectors: This can happen because of poor fuel quality, they will let less fuel through or more if they are totally clogged. So you will possibly have one or more cylinders that are not functioning properly.
  • Leaky Mercedes Classe A 4 injector: It’s generally at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
  • Injector Mercedes Classe A 4 HS: This is the case when your injectors are totally clogged or when you have an electronic problem, it will not let anything go.

Regarding the signs of illness of injector complications on your Mercedes Classe A 4 it is about the same as for a defective injection pump. You may encounter problems with starting, throttle response, power loss, and smoke emission.

How to resolve an injection problem on a Mercedes Classe A 4?

To conclude our article content on the injection complications on Mercedes Classe A 4 , we will try to give you the solutions that exist to resolve these complications.
If after a precise analysis it’s your injection pump that is the source of your complications, it will regrettably be very complicated to intervene on the issue without changing the component, this change generally goes with the replacement of the injectors, and sometimes 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 various solutions based on your concerns, here they are:

  • Dirty injector: You can clean the injectors of your Mercedes Classe A 4, do not think twice to seek advice from our article on this subject to get the procedure. If it doesn’t work, you will have to change them.
  • Leaky injector: The replace and the purchase of a joint kit will only cost you a few tens of euros, but you still need to be able to replace it, do not think twice to seek advice from our article on the injectors that leak on Mercedes Classe A 4, to have all the solutions available to you.
  • Injector HS: Finally, last solution, your injector is damaged or doesn’t work anymore, generally, the replacement of an injector costs around 500 euros labor included.

If you have any further questions about the Mercedes Classe A 4, do not hesitate to consult our Mercedes Classe A 4 category.