Having a issue with your car is basic, because unfortunately recent automobiles are more and more difficult and therefore exposed to more and more possible breakdowns. Today we’re going to try to help you to fix an injection problem on your Renault Scenic 4 . This is a issue that is particularly annoying because it can sooner or later bring your car to non starting or broken engine unit. To do this, first we will discover how injection functions, then, what are the different problems that can exist on a Renault Scenic 4 injectors , and finally, how to fix them.

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What is the aim of the injection of a Renault Scenic 4?

So we begin our article by quickly detailing how an injection system functions so that you have all the info you need to understand the failure associated with it. < br>
The injection system of a Renault Scenic 4 controls the fuel intake into the engine unit , it replaces the old carburettors. It has the benefit to be a lot 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 relieve the fuel in the form of micro-drops into the cylinders of your Renault Scenic 4. 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 therefore a better combustion.

What are the different injection complications on Renault Scenic 4?

Now in this second part, we are going to explore the different injection complications and their manifestations that you might come across on your Renault Scenic 4 .

Injection pump complications Renault Scenic 4

To commence, we will discover the injection pump complications on your Renault Scenic 4, there are not many of them, they are quite often chronic but we will highlight 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 cause a bad air/fuel mixture and therefore a bad combustion and thus alter the behavior of the engine unit of your Renault Scenic 4.
  • Leakage from the injection pump of your Renault Scenic 4: 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 consequences and manifestations of a fuel pump issue on a Renault Scenic 4 , you will certainly experience, a lack of power, your engine unit grazing, dark smoke emissions…

Injectors complications Renault Scenic 4

Now we proceed to the injector problems on Renault Scenic 4 . Injectors represent the end of your injection system, here are the different complications you might encounter:

  • Dirty Renault Scenic 4 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 probably have one or more cylinders that are not functioning properly.
  • Leaky Renault Scenic 4 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 Renault Scenic 4 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 signs of illness of injector complications on your Renault Scenic 4 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 solve an injection issue on a Renault Scenic 4?

To conclude our content page on the injection complications on Renault Scenic 4 , we will try to give you the solutions that exist to fix these complications.
If after a precise diagnosis it’s your injection pump that is the reason of your complications, it will unfortunately be very difficult to intervene on the trouble without replacing the part, this change quite 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 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 Renault Scenic 4, do not think twice to consult our article 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 hesitate to consult our article on the injectors that leak on Renault Scenic 4, to have all the solutions available to you.
  • Injector HS: Finally, last solution, your injector is broken or doesn’t work anymore, generally, the replacement of an injector costs around 500 euros labor included.

To get more tips on the Renault Scenic 4, take a look at the Renault Scenic 4 category.