It is hardly ever relaxing to perceive an injector noise on your Citroen C5 Aircross. It is a noise that appears regularly, usually when you accelerate or your engine is idling. However, this indication may be relating to different types of trouble with your car injectors. It may not be anything major, but when a persistent noise arises, you have to be sure. Specifically since repairing your Citroen C5 Aircross’s injectors can be expensive. That’s why our team decided to prepare this article in order to help you see more clearly, learn about the different conceivable failures and distinguish your problem. To do this, we will first look at the normal functioning and usefulness of the injectors in your Citroen C5 Aircross, then at the conceivable reasons from which an injector noise may come.injector-noise-citroen-c5-aircross

Benefits of the injectors

Injectors are a very significant element of the operation of your engine. They were released to the modern vehicles about 20 years ago. Before their appearance, 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 ability, 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 triggers of a clicking or knocking noise based on the injectors of your Citroen C5 Aircross

Discovering injector noises on your Citroen C5 Aircross may originate from different locations, we will now concentrate on the potential causes of these. In general, the typical noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be put into practice to stop them. If you perceive another clicking noise but it is not from your injectors, we encourage you to read this article about clicking noise on Citroen C5 Aircross to find the trigger.

The explanations for injector clicking or knocking noise Citroen C5 Aircross

A clicking or knocking noise from your injectors can be justified by different explanations. In fact, the injectors of your Citroen C5 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 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 tasks is modified, the main purpose 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 induce thoses knocking or clicking noises on your Citroen C5 Aircross. The main trigger of these problems in most cases 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 part of the engine of your Citroen C5 Aircross, browse this article for more informations.

The side effects of injector noise on Citroen C5 Aircross

Now that we have examined the diverse causes for injector noise on your Citroen C5 Aircross, we will end by stating the possible effects of malfunctioning one or more of your injectors. Whether only one is blocked, or broken, or your entire fuel rail is involved, you cannot escape these consequences which can almost instantly become major….
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 effects noticed by drivers is a severe loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will surely have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will almost instantly harm your cylinders or pistons and your engine may tighten.
Here are three little suggestions to limit the risks connected 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 swapping your diesel fuel filter regularly>