It is rarely ever relaxing to listen an injector noise on your Renault Scenic 2. It is a noise that appears frequently, usually when you accelerate or your engine is idling. However, this indicator may be related to several sort of concerns with your car injectors. It may not be anything major, but when a persistent noise happens, you have to be sure. Especially since repairing your Renault Scenic 2’s injectors can be costly. That’s why our team decided to compose this article content in order to support you see more clearly, learn about the different conceivable failures and determine your problem. To do this, we will first look at the normal functioning and usefulness of the injectors in your Renault Scenic 2, then at the conceivable causes from which an injector noise may come.
Functions of the injectors
Injectors are a very fundamental part of the operation of your engine motor. They were brought in to the modern cars about 20 years ago. Before their appearance, 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 opportunity, 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 car (engine temperature, acceleration level, engine speed, etc.). Their goal 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 causes of a clicking or knocking noise based on the injectors of your Renault Scenic 2
Experiencing injector noises on your Renault Scenic 2 may come from different sources, we will now concentrate on the potential causes of these. Generally, the usual noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be applied to stop them. If you listen another clicking noise but it is not from your injectors, we recommend you to go through this article content about clicking noise on Renault Scenic 2 to find the trigger.
The explanations for injector clicking or knocking noise Renault Scenic 2
A clicking or knocking noise from your injectors can be explained for different explanations. In fact, the injectors of your Renault Scenic 2 have three main tasks, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to ease its combustion. Then, its task is to manage the air/fuel dosage and finally the homogeneity of the mixture, always with the goal of improving combustion. If one of these three features is modified, the main functionality of the injectors will be disrupted and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders resulting from bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Renault Scenic 2. The main trigger of these concerns usually originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible blockage will inevitably end in a malfunction of the injector. If after checking, this noise originates from another element of the engine of your Renault Scenic 2, have a look at this article content for more informations.
The consequences of injector noise on Renault Scenic 2
Now that we have analyzed the different causes for injector noise on your Renault Scenic 2, we will end by stating the possible effects of malfunctioning one or more of your injectors. Whether only one is clogged, or broken, or your entire fuel rail is involved, you cannot escape these side effects which can promptly become severe….
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 consequences experienced by drivers is a serious loss of power. In fact, 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 promptly harm your cylinders or pistons and your engine may tighten.
Here are three little recommendations to limit the risks connected 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 changing your diesel fuel filter regularly>
