It is never pleasant to notice an injector noise on your Volkswagen Polo 8. It is a noise that arises frequently, usually when you accelerate or your engine is idling. However, this indicator may be relating to different kind of complications with your automobile injectors. It may not be anything serious, but when a persistent noise appears, you have to be sure. Especially since fixing your Volkswagen Polo 8’s injectors can be costly. That’s why our team chose to write this article 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 functioning and usefulness of the injectors in your Volkswagen Polo 8, then at the plausible triggers from which an injector noise may come.
Functions of the injectors
Injectors are a very significant component of the operation of your engine. They were released to the modern cars 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 opportunity, 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 accumulated from the various sensors equipping the automobile (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 obtain the best possible combustion in the cylinders.
The different causes of a clicking or knocking noise based on the injectors of your Volkswagen Polo 8
Experiencing injector noises on your Volkswagen Polo 8 may result from different locations, we will now center on the potential causes 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 implemented to get rid of them. If you notice another clicking noise but it is not from your injectors, we recommend you to browse this article about clicking noise on Volkswagen Polo 8 to find the cause.
The reasons for injector clicking or knocking noise Volkswagen Polo 8
A clicking or knocking noise from your injectors can be justified by different reasons. Indeed, the injectors of your Volkswagen Polo 8 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 mission is to deal with the air/fuel dosage and at last the homogeneity of the mixture, always with the objective of improving combustion. If one of these three characteristics is altered, 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 Volkswagen Polo 8. The main cause of these situations in most cases comes 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 comes from another component of the engine of your Volkswagen Polo 8, browse this article for more informations.
The end result of injector noise on Volkswagen Polo 8
Now that we have analyzed the diverse causes for injector noise on your Volkswagen Polo 8, we will end by stating the possible 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 repercussions which can 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 known effects experienced by drivers is a significant loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will obviously have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will quickly damage your cylinders or pistons and your engine may tighten.
Here are three little recommendations 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>
