Having a issue with your motor vehicle is traditional, because regrettably recent vehicles are more and more difficult and consequently at the mercy of more and more possible breakdowns. In this article we’re going to try to help you to fix an injection problem on your BMW 7 Series . This is a issue that is particularly bothersome because it can ultimately bring your vehicle to non starting or broken engine unit. To do this, first we will discover how injection functions, then, what are the different concerns that can exist on a BMW 7 Series injectors , and at last, how to fix them.

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What is the goal of the injection of a BMW 7 Series?

So we start our content page by quickly detailing how an injection system functions so that you have all the information you need to discover the failure affiliated with it. < br>
The injection system of a BMW 7 Series handles the fuel intake into the engine unit , it replaces the old carburettors. It has the benefit to be far more precise and to come, under pressure, to launch 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 relieve the fuel in the form of micro-drops into the cylinders of your BMW 7 Series. 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 BMW 7 Series?

Now in this second component, we are going to discover the different injection problems and their signs of illness that you might confront on your BMW 7 Series .

Injection pump problems BMW 7 Series

To begin, we will discover the injection pump problems on your BMW 7 Series, there are not many of them, they are often recurrent 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 might be too high or too low which will trigger a bad air/fuel mixture and consequently a bad combustion and thus alter the behavior of the engine unit of your BMW 7 Series.
  • Leakage from the injection pump of your BMW 7 Series: 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 consequences and signs of illness of a fuel pump issue on a BMW 7 Series , you will undoubtedly experience, a lack of power, your engine unit grazing, dark smoke emissions…

Injectors problems BMW 7 Series

Now we move on to the injector problems on BMW 7 Series . Injectors are the end of your injection system, here are the different problems you might encounter:

  • Dirty BMW 7 Series 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 probably have one or more cylinders that are not functioning properly.
  • Leaky BMW 7 Series injector: It’s often at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
  • Injector BMW 7 Series 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 symptoms of injector problems on your BMW 7 Series it is about the same as for a faulty injection pump. You might encounter problems with starting, throttle response, power loss, and smoke emission.

How to resolve an injection issue on a BMW 7 Series?

To conclude our content page on the injection problems on BMW 7 Series , we will try to give you the solutions that exist to fix these problems.
If after a precise analysis it’s your injection pump that is the cause of your problems, it will regrettably be very complicated to intervene on the issue without changing the component, this change often goes with the replacement of the injectors, and occasionally 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 various solutions depending on your concerns, here they are:

  • Dirty injector: You can clean the injectors of your BMW 7 Series, do not hesitate to seek advice from our content page 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 be able to change it, do not hesitate to seek advice from our content page on the injectors that leak on BMW 7 Series, to have all the solutions available to you.
  • Injector HS: Finally, last solution, your injector is broken or doesn’t work anymore, generally speaking, the replacement of an injector costs around 500 euros labor included.

If you wish more tutorials on the BMW 7 Series, go to our BMW 7 Series category.