Having a issue with your motor vehicle is basic, because unfortunately recent vehicles are more and more difficult and therefore exposed to more and more possible breakdowns. Today we’re going to try to help you to solve an injection problem on your BMW 3 Series . This is a issue that is especially bothersome because it can ultimately bring your vehicle to non starting or damaged engine unit. To do this, first we will see how injection functions, then, what are the different concerns that can exist on a BMW 3 Series injectors , and finally, how to solve them.

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What is the goal of the injection of a BMW 3 Series?

So we commence our content page by quickly detailing how an injection system functions so that you have all the info you need to understand the failures associated with it. < br>
The injection system of a BMW 3 Series controls the fuel intake into the engine unit , it replaces the old carburettors. It has the benefit to be much 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 BMW 3 Series. 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 BMW 3 Series?

Now in this second part, we are going to explore the different injection complications and their symptoms that you might confront on your BMW 3 Series .

Injection pump complications BMW 3 Series

To begin, we will see the injection pump complications on your BMW 3 Series, there are not many of them, they are generally frequent but we will outline them down 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 bring about a bad air/fuel mixture and therefore a bad combustion and thus alter the performance of the engine unit of your BMW 3 Series.
  • Leakage from the injection pump of your BMW 3 Series: 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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Concerning the outcomes and symptoms of a fuel pump issue on a BMW 3 Series , you will obviously feel, a lack of power, your engine unit grazing, dark smoke emissions…

Injectors complications BMW 3 Series

Now we move on to the injector problems on BMW 3 Series . Injectors are the end of your injection system, here are the different complications you might encounter:

  • Dirty BMW 3 Series injectors: This can happen as a result of 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 properly.
  • Leaky BMW 3 Series injector: It’s generally at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
  • Injector BMW 3 Series HS: This is the circumstance when your injectors are totally clogged or when you have an electronic problem, it will not let anything go.

Regarding the symptoms of injector complications on your BMW 3 Series it is about the same as for a defective injection pump. You might encounter problems with starting, throttle response, power loss, and smoke emission.

How to resolve an injection issue on a BMW 3 Series?

To end our article on the injection complications on BMW 3 Series , we will try to give you the solutions that exist to solve these complications.
If after a precise analysis it’s your injection pump that is the reason of your complications, it will unfortunately be very difficult to intervene on the trouble without changing the part, this change generally 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 3 Series, do not think twice to consult our content page 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 have the ability to replace it, do not think twice to consult our content page on the injectors that leak on BMW 3 Series, 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 want more guides on the BMW 3 Series, go to our BMW 3 Series category.