It is hardly ever relaxing to experience an injector noise on your Volvo Xc40. It is a noise that happens repeatedly, usually when you accelerate or your engine is idling. However, this sign may be related to several sort of problems with your vehicle injectors. It may not be anything major, but when a repeated noise comes out, you have to be sure. Most importantly since repairing your Volvo Xc40’s injectors can be costly. That’s why our team decided to compose this content in order to help you see more clearly, learn about the different plausible failures and determine your issue. To do this, we will first look at the normal running and usefulness of the injectors in your Volvo Xc40, then at the plausible triggers from which an injector noise may come.
Purposes of the injectors
Injectors are a very significant component of the operation of your engine unit. They were introduced to the modern automobiles 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 obtained 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 origins of a clicking or knocking noise coming from the injectors of your Volvo Xc40
Experiencing injector noises on your Volvo Xc40 may originate from different sources, we will now concentrate on the potential causes of these. Generally, the common noise of a faulty injector is of the snap type. Here are the several sources of these noises and the solutions to be implemented to eliminate them. If you experience another clicking noise but it is not from your injectors, we encourage you to go through this content about clicking noise on Volvo Xc40 to find the trigger.
The reasons for injector clicking or knocking noise Volvo Xc40
A clicking or knocking noise from your injectors can be justified by different reasons. In fact, the injectors of your Volvo Xc40 have three main missions, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its objective is to deal with the air/fuel dosage and finally the homogeneity of the mixture, always with the goal of improving combustion. If one of these three features 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 resulting from bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will trigger thoses knocking or clicking noises on your Volvo Xc40. The main trigger of these concerns in most cases comes 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 verifying, this noise comes from another component of the engine of your Volvo Xc40, check this content for more informations.
The effects of injector noise on Volvo Xc40
Now that we have analyzed the diverse reasons for injector noise on your Volvo Xc40, we will end by stating the possible end result of malfunctioning one or more of your injectors. Whether only one is blocked, or damaged, or your entire fuel rail is involved, you cannot escape these effects which can almost instantly become serious….
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 basic consequences felt by drivers is a serious loss of power. In fact, 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 almost instantly harm 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>
