It is never enjoyable to notice an injector noise on your Citroen C4. It is a noise that comes up regularly, usually when you accelerate or your engine is idling. However, this warning sign may be connected to several types of problems with your car injectors. It may not be anything major, but when a continuing noise shows up, you have to be sure. Specifically since replacing your Citroen C4’s injectors can be expensive. That’s why our team chose to prepare this content in order to help you see more clearly, learn about the different plausible failures and determine your problem. To do this, we will first look at the normal function and usefulness of the injectors in your Citroen C4, then at the plausible triggers from which an injector noise may come.
Functions of the injectors
Injectors are a very vital part of the operation of your engine. They were released to the modern automobiles about 20 years ago. Before their introduction, 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 received from the various sensors equipping the car (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 caused by the injectors of your Citroen C4
Discovering injector noises on your Citroen C4 may result from different sources, we will now concentrate on the potential triggers of these. In general, 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 notice another clicking noise but it is not from your injectors, we encourage you to go through this content about clicking noise on Citroen C4 to locate the trigger.
The causes for injector clicking or knocking noise Citroen C4
A clicking or knocking noise from your injectors can be explained for different causes. Indeed, the injectors of your Citroen C4 have three main tasks, to control the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to ease its combustion. Then, its goal 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 attributes 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 Citroen C4. The main trigger of these trouble commonly comes from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably cause a malfunction of the injector. If after checking, this noise comes from another component of the engine of your Citroen C4, browse this content for more infos.
The end result of injector noise on Citroen C4
Now that we have reviewed the different reasons for injector noise on your Citroen C4, we will end by stating the possible side effects 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 quickly 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 known effects noticed by drivers is a severe loss of power. Indeed, 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 quickly affect your cylinders or pistons and your engine may tighten.
Here are three little recommendations 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 changing your diesel fuel filter regularly>
