Having a issue with your motor vehicle is traditional, because regrettably recent automobiles are more and more complex and consequently at the mercy of more and more possible breakdowns. On this page we’re going to try to help you to resolve an injection problem on your Audi A4 . This is a issue that is specially irritating because it can sooner or later bring your vehicle to non starting or broken engine unit. To achieve this, first we will discover how injection functions, then, what are the different problems that can exist on a Audi A4 injectors , and at last, how to resolve them.

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What is the aim of the injection of a Audi A4?

So we commence our article by promptly detailing how an injection system functions so that you have all the info you need to discover the failure connected with it. < br>
The injection system of a Audi A4 handles the fuel intake into the engine unit , it replaces the old carburettors. It has the advantage to be much 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 discharge the fuel in the form of micro-drops into the cylinders of your Audi A4. The advantage of fuel injection is to have a much more precise dosage than a carburettor and to allow a better air/fuel mixture and consequently a better combustion.

What are the different injection complications on Audi A4?

Now in this second component, we are going to discover the different injection complications and their symptoms that you may possibly confront on your Audi A4 .

Injection pump complications Audi A4

To start, we will discover the injection pump complications on your Audi A4, there are not many of them, they are quite often persistent but we will outline 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 Audi A4.
  • Leakage from the injection pump of your Audi A4: If you have a significant 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

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Concerning the results and symptoms of a fuel pump issue on a Audi A4 , you will certainly feel, a lack of power, your engine unit grazing, dark smoke emissions…

Injectors complications Audi A4

Now we proceed to the injector problems on Audi A4 . Injectors represent the end of your injection system, here are the different complications you may possibly encounter:

  • Dirty Audi A4 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 potentially have one or more cylinders that are not working properly.
  • Leaky Audi A4 injector: It’s quite often at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
  • Injector Audi A4 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 signs of illness of injector complications on your Audi A4 it is about the same as for a defective injection pump. You may possibly experience problems with starting, throttle response, power loss, and smoke emission.

How to fix an injection issue on a Audi A4?

To finish our article content on the injection complications on Audi A4 , we will try to give you the solutions that exist to resolve these complications.
If after a precise investigation it’s your injection pump that is the main cause of your complications, it will regrettably be very difficult to intervene on the issue without changing the component, this change quite often 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 various solutions based on your concerns, here they are:

  • Dirty injector: You can clean the injectors of your Audi A4, do not be reluctant to seek advice from our article on this subject to get the process. 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 have the ability to change it, do not hesitate to seek advice from our article on the injectors that leak on Audi A4, to have all the solutions available to you.
  • Injector HS: Finally, last remedy, your injector is damaged or doesn’t work anymore, generally, the replacement of an injector costs around 500 euros labor included.

If you need more tutorials on the Audi A4, go to our Audi A4 category.