It is hardly ever enjoyable to hear an injector noise on your Volvo XC90. It is a noise that happens frequently, usually when you accelerate or your engine is idling. However, this symptom may be connected to several types of complications with your vehicle injectors. It may not be anything severe, but when a continuing noise happens, you have to be sure. Specifically since replacing your Volvo XC90’s injectors can be costly. That’s why our team chose to write this content page in order to support you see more clearly, learn about the different plausible failures and identify your issue. To do this, we will first look at the normal running and usefulness of the injectors in your Volvo XC90, then at the plausible reasons from which an injector noise may come.
Benefits of the injectors
Injectors are a very important part of the operation of your engine. They were launched to the modern cars about 20 years ago. Before their introduction, 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 purpose 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 caused by the injectors of your Volvo XC90
Hearing injector noises on your Volvo XC90 may originate from different sources, we will now center on 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 put into practice to prevent them. If you hear another clicking noise but it is not from your injectors, we encourage you to browse this content page about clicking noise on Volvo XC90 to discover the cause.
The causes for injector clicking or knocking noise Volvo XC90
A clicking or knocking noise from your injectors can be justified by different causes. In fact, the injectors of your Volvo XC90 have three main tasks, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its mission is to manage 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 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 provoke thoses knocking or clicking noises on your Volvo XC90. The main cause of these trouble commonly originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably result in a malfunction of the injector. If after checking, this noise originates from another part of the engine of your Volvo XC90, check this content page for more informations.
The end result of injector noise on Volvo XC90
Now that we have examined the several causes for injector noise on your Volvo XC90, we will end by stating the possible end result 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 repercussions which can promptly 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 regular 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 undoubtedly 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 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 changing your diesel fuel filter regularly>
