It is hardly ever enjoyable to acknowledge an injector noise on your Citroen C4 Aircross. It is a noise that comes up repeatedly, usually when you accelerate or your engine is idling. However, this sign may be linked to several kind of trouble with your vehicle injectors. It may not be anything severe, but when a frequent noise comes out, you have to be sure. Especially since replacing your Citroen C4 Aircross’s injectors can be costly. That’s why our team decided 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 functioning and usefulness of the injectors in your Citroen C4 Aircross, then at the possible reasons from which an injector noise may come.
Attributes of the injectors
Injectors are a very fundamental part of the operation of your engine motor. They were brought in to the modern vehicles 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 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 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 origins of a clicking or knocking noise coming from the injectors of your Citroen C4 Aircross
Hearing injector noises on your Citroen C4 Aircross may result from different sources, we will now concentrate on the potential causes of these. In general, the regular noise of a faulty injector is of the snap type. Here are the several sources of these noises and the solutions to be used to get rid of them. If you acknowledge another clicking noise but it is not from your injectors, we suggest you to go through this article about clicking noise on Citroen C4 Aircross to find the trigger.
The explanations for injector clicking or knocking noise Citroen C4 Aircross
A clicking or knocking noise from your injectors can be explained for different explanations. Indeed, the injectors of your Citroen C4 Aircross have three main tasks, to manage the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its mission is to deal with the air/fuel dosage and at last the homogeneity of the mixture, always with the goal of improving combustion. If one of these three characteristics is modified, the main role 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 induce thoses knocking or clicking noises on your Citroen C4 Aircross. The main trigger of these situations generally originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably produce a malfunction of the injector. If after checking, this noise originates from another component of the engine of your Citroen C4 Aircross, have a look at this article for more informations.
The side effects of injector noise on Citroen C4 Aircross
Now that we have analyzed the several causes for injector noise on your Citroen C4 Aircross, 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 effects which can promptly 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 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 obviously have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will promptly affect your cylinders or pistons and your engine may tighten.
Here are three little suggestions 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>
