It is never relaxing to experience an injector noise on your Renault Scenic. It is a noise that comes up regularly, usually when you accelerate or your engine is idling. However, this warning sign may be linked to multiple sort of complications with your car injectors. It may not be anything severe, but when a persistent noise comes out, you have to be sure. Most importantly since repairing your Renault Scenic’s injectors can be expensive. That’s why our team decided to compose this article content in order to help you see more clearly, learn about the different conceivable failures and establish your issue. To do this, we will first look at the normal functioning and usefulness of the injectors in your Renault Scenic, then at the conceivable reasons from which an injector noise may come.
Attributes of the injectors
Injectors are a very important element of the operation of your engine unit. They were released to the modern vehicles about 20 years ago. Before their arrival, 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 get the best possible combustion in the cylinders.
The different triggers of a clicking or knocking noise based on the injectors of your Renault Scenic
Experiencing injector noises on your Renault Scenic may originate from different locations, we will now focus on the potential triggers of these. In general, the common noise of a faulty injector is of the snap type. Here are the different sources of these noises and the solutions to be put into practice to stop them. If you experience another clicking noise but it is not from your injectors, we encourage you to go through this article content about clicking noise on Renault Scenic to locate the cause.
The explanations for injector clicking or knocking noise Renault Scenic
A clicking or knocking noise from your injectors can be justified by different explanations. Indeed, the injectors of your Renault Scenic have three main tasks, to manage the vaporisation of the fuel, i.e., to transform 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 target of improving combustion. If one of these three tasks 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 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 Scenic. The main cause of these trouble commonly originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible blockage will inevitably lead to a malfunction of the injector. If after checking, this noise originates from another element of the engine of your Renault Scenic, have a look at this article content for more infos.
The effects of injector noise on Renault Scenic
Now that we have reviewed the several causes for injector noise on your Renault Scenic, we will end by stating the possible side effects 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 effects which can almost instantly become serious….
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 regular repercussions felt 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 almost instantly damage your cylinders or pistons and your engine may tighten.
Here are three little tips to limit the risks associated with 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>
