Having a issue with your motor vehicle is common, because regrettably recent automobiles are more and more difficult and consequently be subject to more and more possible breakdowns. In this article we’re going to try to help you to resolve an injection problem on your Audi A3 . This is a issue that is specially bothersome because it can ultimately bring your car to non starting or damaged engine unit. To achieve this, first we will discover how injection works, then, what are the different concerns that can exist on a Audi A3 injectors , and at last, how to resolve them.


What is the aim of the injection of a Audi A3?

So we commence our content page by quickly detailing how an injection system works so that you have all the info you need to discover the failures associated with it. < br>
The injection system of a Audi A3 controls the fuel intake into the engine unit , it replaces the old carburettors. It has the advantage to be a lot more precise and to come, under pressure, to release 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 discharge the fuel in the form of micro-drops into the cylinders of your Audi A3. The advantage 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 complications on Audi A3?

Now in this second part, we are going to discover the different injection complications and their symptoms that you might confront on your Audi A3 .

Injection pump complications Audi A3

To start, we will discover the injection pump complications on your Audi A3, there are not many of them, they are often persistent 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 trigger a bad air/fuel mixture and consequently a bad combustion and thus alter the performance of the engine unit of your Audi A3.
  • Leakage from the injection pump of your Audi A3: If you have a major leakage problem, the end result 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

Regarding the results and symptoms of a fuel pump issue on a Audi A3 , you will certainly feel, a lack of power, your engine unit grazing, dark smoke emissions…

Injectors complications Audi A3

Now we proceed to the injector problems on Audi A3 . Injectors are the end of your injection system, here are the different complications you might encounter:

  • Dirty Audi A3 injectors: This can happen due to poor fuel quality, they will let less fuel through or more if they are completely clogged. So you will possibly have one or more cylinders that are not working effectively.
  • Leaky Audi A3 injector: It’s often at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
  • Injector Audi A3 HS: This is the case when your injectors are completely clogged or when you have an electronic problem, it will not let anything go.

Concerning the symptoms of injector complications on your Audi A3 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 resolve an injection issue on a Audi A3?

To finish our article on the injection complications on Audi A3 , 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 cause of your complications, it will regrettably be very difficult to intervene on the issue without changing the part, 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 issue with an injector there are different solutions depending on your concerns, here they are:

  • Dirty injector: You can clean the injectors of your Audi A3, do not hesitate to seek advice from our content page on this subject to get the procedure. If it doesn’t work, you will have to replace 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 hesitate to seek advice from our content page on the injectors that leak on Audi A3, to have all the solutions available to you.
  • Injector HS: Finally, last remedy, your injector is broken or doesn’t work anymore, in general, the replacement of an injector costs around 500 euros labor included.

If you need more guides on the Audi A3, go to our Audi A3 category.