It is rarely ever relaxing to notice an injector noise on your Volkswagen Polo 3. It is a noise that appears continually, usually when you accelerate or your engine is idling. However, this indication may be relating to multiple kind of complications with your vehicle injectors. It may not be anything severe, but when a frequent noise happens, you have to be sure. Especially since fixing your Volkswagen Polo 3’s injectors can be costly. That’s why our team decided to write this content page in order to support you see more clearly, learn about the different possible failures and determine your issue. To do this, we will first look at the normal running and usefulness of the injectors in your Volkswagen Polo 3, then at the possible causes from which an injector noise may come.
Benefits of the injectors
Injectors are a very significant component of the operation of your engine motor. They were launched to the modern vehicles about 20 years ago. Before their appearance, 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 collected from the various sensors equipping the vehicle (engine temperature, acceleration level, engine speed, etc.). Their goal 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 Volkswagen Polo 3
Discovering injector noises on your Volkswagen Polo 3 may result 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 sources 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 page about clicking noise on Volkswagen Polo 3 to discover the trigger.
The reasons for injector clicking or knocking noise Volkswagen Polo 3
A clicking or knocking noise from your injectors can be justified by different reasons. In fact, the injectors of your Volkswagen Polo 3 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 goal is to control the air/fuel dosage and finally the homogeneity of the mixture, always with the objective of improving combustion. If one of these three tasks 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 as a consequence of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will induce thoses knocking or clicking noises on your Volkswagen Polo 3. The main trigger of these concerns in most cases comes from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible blockage will inevitably lead to a malfunction of the injector. If after checking, this noise comes from another element of the engine of your Volkswagen Polo 3, check this content page for more informations.
The end result of injector noise on Volkswagen Polo 3
Now that we have reviewed the different causes for injector noise on your Volkswagen Polo 3, we will end by stating the possible side effects 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 effects which can almost instantly become severe….
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 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 degrading 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 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>
