It is rarely ever pleasant to listen an injector noise on your Renault Grand Scenic 4. It is a noise that arises continually, usually when you accelerate or your engine is idling. However, this symptom may be connected to different sort of complications with your vehicle injectors. It may not be anything serious, but when a repeated noise happens, you have to be sure. Most importantly since repairing your Renault Grand Scenic 4’s injectors can be costly. That’s why our team chose to compose this article in order to help you see more clearly, learn about the different possible failures and distinguish your problem. To do this, we will first look at the normal running and usefulness of the injectors in your Renault Grand Scenic 4, then at the possible triggers from which an injector noise may come.
Benefits of the injectors
Injectors are a very significant part of the operation of your engine motor. They were launched to the modern automobiles about 20 years ago. Before their arrival, more conventional carburettor-type intake systems were used, 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 accurately (quantity of fuel injected, air/fuel mixture) via the analysis of the data compiled from the various sensors equipping the vehicle (engine temperature, acceleration level, engine speed, etc.). Their objective is therefore to inject under high pressure a precise quantity of an air/fuel mixture at a perfect timing to get the best possible combustion in the cylinders.
The different reasons of a clicking or knocking noise based on the injectors of your Renault Grand Scenic 4
Discovering injector noises on your Renault Grand Scenic 4 may originate from different sources, we will now look into the potential triggers of these. Generally, 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 used to stop them. If you listen another clicking noise but it is not from your injectors, we encourage you to read this article about clicking noise on Renault Grand Scenic 4 to discover the trigger.
The causes for injector clicking or knocking noise Renault Grand Scenic 4
A clicking or knocking noise from your injectors can be justified by different causes. Indeed, the injectors of your Renault Grand Scenic 4 have three main tasks, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its objective is to manage the air/fuel dosage and finally the homogeneity of the mixture, always with the objective of improving combustion. If one of these three characteristics is altered, the main functionality of the injectors will be disturbed and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders as a consequence of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Renault Grand Scenic 4. The main trigger of these trouble usually comes from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible obstruction will inevitably produce a malfunction of the injector. If after verifying, this noise comes from another component of the engine of your Renault Grand Scenic 4, read this article for more informations.
The side effects of injector noise on Renault Grand Scenic 4
Now that we have reviewed the several causes for injector noise on your Renault Grand Scenic 4, we will end by stating the possible side effects of malfunctioning one or more of your injectors. Whether only one is blocked, or damaged, or your entire fuel rail is involved, you cannot escape these consequences which can quickly become critical….
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 basic effects experienced by drivers is a severe loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will inevitably have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will quickly harm 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 changing your diesel fuel filter regularly>
