It is never enjoyable to listen to an injector noise on your Volkswagen Lupo. It is a noise that appears frequently, usually when you accelerate or your engine is idling. However, this symptom may be relating to different sort of trouble with your automobile injectors. It may not be anything serious, but when a persistent noise happens, you have to be sure. Specifically since repairing your Volkswagen Lupo’s injectors can be costly. That’s why our team decided to produce this content page in order to help you see more clearly, learn about the different possible failures and establish your issue. To do this, we will first look at the normal functioning and usefulness of the injectors in your Volkswagen Lupo, then at the possible triggers from which an injector noise may come.
Functions of the injectors
Injectors are a very important part of the operation of your engine unit. They were launched 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 ability, 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 automobile (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 obtain the best possible combustion in the cylinders.
The different triggers of a clicking or knocking noise coming from the injectors of your Volkswagen Lupo
Listening injector noises on your Volkswagen Lupo may originate from different sources, we will now look into the potential triggers of these. In general, the usual noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be put into practice to eliminate them. If you listen to another clicking noise but it is not from your injectors, we encourage you to read this content page about clicking noise on Volkswagen Lupo to discover the trigger.
The causes for injector clicking or knocking noise Volkswagen Lupo
A clicking or knocking noise from your injectors can be justified by different causes. Indeed, the injectors of your Volkswagen Lupo 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 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 features 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 due to bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Volkswagen Lupo. The main trigger of these problems generally originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible blockage will inevitably end up in a malfunction of the injector. If after checking, this noise originates from another part of the engine of your Volkswagen Lupo, read this content page for more informations.
The consequences of injector noise on Volkswagen Lupo
Now that we have reviewed the different reasons for injector noise on your Volkswagen Lupo, we will end by stating the possible effects 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 consequences which can promptly 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 regular consequences experienced by drivers is a severe loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will surely have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will promptly damage your cylinders or pistons and your engine may tighten.
Here are three little tips to limit the risks connected 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>
