It is never pleasant to listen an injector noise on your Renault Clio 2. It is a noise that happens regularly, usually when you accelerate or your engine is idling. However, this indication may be relating to different kind of complications with your car injectors. It may not be anything serious, but when a persistent noise arises, you have to be sure. Most importantly since repairing your Renault Clio 2’s injectors can be costly. That’s why our team chose to prepare this content in order to support you see more clearly, learn about the different possible failures and identify your issue. To do this, we will first look at the normal running and usefulness of the injectors in your Renault Clio 2, then at the possible causes from which an injector noise may come.
Attributes of the injectors
Injectors are a very useful component of the operation of your engine unit. They were introduced to the modern vehicles about 20 years ago. Before their introduction, more conventional carburettor-type intake systems were employed, which handled the intake of air and fuel into the engine cylinders. With the injectors, manufacturers now have the possibility, thanks to the injectors pump, to control electronically each stage of the intake process very precisely (quantity of fuel injected, air/fuel mixture) via the analysis of the data received from the various sensors equipping the car (engine temperature, acceleration level, engine speed, etc.). Their purpose is therefore to inject under high pressure a precise quantity of an air/fuel mixture at a perfect timing to obtain the best possible combustion in the cylinders.
The different reasons of a clicking or knocking noise coming from the injectors of your Renault Clio 2
Listening injector noises on your Renault Clio 2 may come from different origins, we will now focus on the potential causes of these. In general, the typical noise of a faulty injector is of the snap type. Here are the different sources of these noises and the solutions to be implemented to prevent them. If you listen another clicking noise but it is not from your injectors, we suggest you to browse this content about clicking noise on Renault Clio 2 to locate the cause.
The causes for injector clicking or knocking noise Renault Clio 2
A clicking or knocking noise from your injectors can be explained for different causes. Indeed, the injectors of your Renault Clio 2 have three main tasks, to control the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its mission is to control the air/fuel dosage and finally the homogeneity of the mixture, always with the objective of improving combustion. If one of these three functions is altered, the main purpose of the injectors will be disturbed and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders due to bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will induce thoses knocking or clicking noises on your Renault Clio 2. The main cause of these situations generally comes from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably lead to a malfunction of the injector. If after verifying, this noise comes from another part of the engine of your Renault Clio 2, have a look at this content for more informations.
The effects of injector noise on Renault Clio 2
Now that we have analyzed the several causes for injector noise on your Renault Clio 2, we will end by stating the possible consequences of malfunctioning one or more of your injectors. Whether only one is obstructed, or damaged, or your entire fuel rail is involved, you cannot escape these side effects which can quickly become major….
First, you risk destroying your exhaust unit in the long run, because the unburned fuel residues that will end up in your exhaust system can corrode the metal in it.
One of the most known repercussions experienced by drivers is a distinctive loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will undoubtedly have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will quickly affect your cylinders or pistons and your engine may tighten.
Here are three little recommendations to limit the risks linked to your injectors and protect you from engine failure:
- Do not drive at the bottom of the tank, as you may absorb impurities
- Use quality fuel
- Think of swapping your diesel fuel filter regularly>
