It is hardly ever pleasant to listen to an injector noise on your Renault Grand Espace. It is a noise that happens continually, usually when you accelerate or your engine is idling. However, this indication may be linked to several kind of concerns with your vehicle injectors. It may not be anything severe, but when a continuing noise arises, you have to be sure. Especially since fixing your Renault Grand Espace’s injectors can be expensive. That’s why our team decided to produce this article in order to help you see more clearly, learn about the different plausible failures and establish your problem. To do this, we will first look at the normal functioning and usefulness of the injectors in your Renault Grand Espace, then at the plausible triggers from which an injector noise may come.
Purposes of the injectors
Injectors are a very useful component of the operation of your engine unit. They were launched to the modern cars 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 accumulated from the various sensors equipping the vehicle (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 origins of a clicking or knocking noise caused by the injectors of your Renault Grand Espace
Finding out injector noises on your Renault Grand Espace may result from different origins, we will now look into the potential causes of these. In general, the common noise of a faulty injector is of the snap type. Here are the different origins of these noises and the solutions to be implemented to get rid of them. If you listen to another clicking noise but it is not from your injectors, we suggest you to browse this article about clicking noise on Renault Grand Espace to find the reason.
The causes for injector clicking or knocking noise Renault Grand Espace
A clicking or knocking noise from your injectors can be explained for different causes. Indeed, the injectors of your Renault Grand Espace have three main missions, 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 at last the homogeneity of the mixture, always with the target of improving combustion. If one of these three functions is altered, the main purpose of the injectors will be disrupted 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 trigger thoses knocking or clicking noises on your Renault Grand Espace. The main reason of these situations commonly comes from a particle that gets into the injectors. The accuracy 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 comes from another element of the engine of your Renault Grand Espace, have a look at this article for more informations.
The repercussions of injector noise on Renault Grand Espace
Now that we have reviewed the diverse reasons for injector noise on your Renault Grand Espace, we will end by stating the possible consequences of malfunctioning one or more of your injectors. Whether only one is obstructed, or broken, or your entire fuel rail is involved, you cannot escape these repercussions which can quickly become critical….
First, you risk destroying your exhaust system 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 common consequences experienced by drivers is a significant loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will obviously have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will quickly damage 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 swapping your diesel fuel filter regularly>
