Having a issue with your car is common, because unfortunately 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 fix an injection problem on your Mercedes Benz M Class . This is a issue that is specially frustrating because it can sooner or later bring your car to non starting or broken engine. To get this done, first we will see how injection functions, then, what are the different problems that can exist on a Mercedes Benz M Class injectors , and finally, how to fix them.

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What is the purpose of the injection of a Mercedes Benz M Class?

So we start our article by promptly explaining how an injection system functions so that you have all the info you need to figure out the failure connected with it. < br>
The injection system of a Mercedes Benz M Class handles the fuel intake into the engine , it replaces the old carburettors. It has the benefit to be far more precise and to come, under pressure, to discharge 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 Benz M Class. 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 Benz M Class?

Now in this second part, we are going to explore the different injection problems and their symptoms that you might face on your Mercedes Benz M Class .

Injection pump problems Mercedes Benz M Class

To commence, we will see the injection pump problems on your Mercedes Benz M Class, there are not many of them, they are generally frequent but we will highlight them below:

  • Electronic issue of the high pressure pump: If you have an electronic issue, the pressure in your injection system may be too high or too low which will bring about a bad air/fuel mixture and consequently a bad combustion and thus alter the performance of the engine of your Mercedes Benz M Class.
  • Leakage from the injection pump of your Mercedes Benz M Class: 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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Concerning the outcomes and symptoms of a fuel pump issue on a Mercedes Benz M Class , you will most certainly feel, a lack of power, your engine grazing, dark smoke emissions…

Injectors problems Mercedes Benz M Class

Now we move on to the injector problems on Mercedes Benz M Class . Injectors are the end of your injection system, here are the different problems you might encounter:

  • Dirty Mercedes Benz M Class 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 effectively.
  • Leaky Mercedes Benz M Class 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 Benz M Class 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 problems on your Mercedes Benz M Class it is about the same as for a defective injection pump. You might experience problems with starting, throttle response, power loss, and smoke emission.

How to fix an injection issue on a Mercedes Benz M Class?

To finish our article content on the injection problems on Mercedes Benz M Class , we will try to give you the solutions that exist to fix these problems.
If after a precise diagnosis it’s your injection pump that is the reason of your problems, it will unfortunately be very complicated to intervene on the problem without replacing the part, 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 several diagnostics and estimates before starting any repair.
Concerning a issue with an injector there are different solutions based on your concerns, here they are:

  • Dirty injector: You can clean the injectors of your Mercedes Benz M Class, 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 replace 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 be able to change it, do not hesitate to seek advice from our article on the injectors that leak on Mercedes Benz M Class, to have all the solutions available to you.
  • Injector HS: Finally, last remedy, your injector is damaged or doesn’t work anymore, in general, the replacement of an injector costs around 500 euros labor included.

If you need more tutorials on the Mercedes Benz M Class, go to our Mercedes Benz M Class category.