It is hardly ever relaxing to acknowledge an injector noise on your Volkswagen Polo. It is a noise that arises continually, usually when you accelerate or your engine is idling. However, this symptom may be connected to different sort of problems with your vehicle injectors. It may not be anything severe, but when a persistent noise appears, you have to be sure. Specifically since replacing your Volkswagen Polo’s injectors can be costly. That’s why our team decided to compose this content in order to support you see more clearly, learn about the different possible failures and establish your problem. To do this, we will first look at the normal function and usefulness of the injectors in your Volkswagen Polo, then at the possible causes from which an injector noise may come.
Functions of the injectors
Injectors are a very useful component of the operation of your engine. They were launched 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 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 vehicle (engine temperature, acceleration level, engine speed, etc.). Their aim 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 triggers of a clicking or knocking noise coming from the injectors of your Volkswagen Polo
Discovering injector noises on your Volkswagen Polo may result from different origins, we will now look into the potential triggers of these. Generally, the typical noise of a faulty injector is of the snap type. Here are the different sources of these noises and the solutions to be applied to eliminate them. If you acknowledge another clicking noise but it is not from your injectors, we suggest you to read this content about clicking noise on Volkswagen Polo to discover the reason.
The reasons for injector clicking or knocking noise Volkswagen Polo
A clicking or knocking noise from your injectors can be justified by different reasons. In fact, the injectors of your Volkswagen Polo have three main missions, to manage the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its mission is to deal with the air/fuel dosage and finally the homogeneity of the mixture, always with the aim of improving combustion. If one of these three tasks is modified, the main role of the injectors will be disturbed and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders because of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Volkswagen Polo. The main reason of these concerns generally originates from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible obstruction will inevitably end up in a malfunction of the injector. If after verifying, this noise originates from another element of the engine of your Volkswagen Polo, check this content for more infos.
The consequences of injector noise on Volkswagen Polo
Now that we have examined the several causes for injector noise on your Volkswagen Polo, we will end by stating the possible consequences 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 fairly quickly become severe….
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 effects noticed 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 obviously have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will fairly 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 swapping your diesel fuel filter regularly>
