It is never pleasurable to notice an injector noise on your Audi A3. It is a noise that happens repeatedly, usually when you accelerate or your engine is idling. However, this indication may be linked to several types of complications with your car injectors. It may not be anything major, but when a recurrent noise happens, you have to be sure. Especially since repairing your Audi A3’s injectors can be expensive. That’s why our team chose to create this content page in order to help you see more clearly, learn about the different plausible failures and determine your problem. To do this, we will first look at the normal functioning and usefulness of the injectors in your Audi A3, then at the plausible causes from which an injector noise may come.
Benefits of the injectors
Injectors are a very fundamental component of the operation of your engine. They were released 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 accurately (quantity of fuel injected, air/fuel mixture) via the analysis of the data obtained from the various sensors equipping the car (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 origins of a clicking or knocking noise caused by the injectors of your Audi A3
Finding out injector noises on your Audi A3 may result from different locations, we will now look into the potential triggers of these. Generally, the common noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be used to eliminate them. If you notice another clicking noise but it is not from your injectors, we recommend you to browse this content page about clicking noise on Audi A3 to discover the reason.
The causes for injector clicking or knocking noise Audi A3
A clicking or knocking noise from your injectors can be explained for different causes. In fact, the injectors of your Audi A3 have three main tasks, to manage the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to ease its combustion. Then, its mission is to control the air/fuel dosage and at last the homogeneity of the mixture, always with the goal of improving combustion. If one of these three characteristics is modified, the main functionality 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 induce thoses knocking or clicking noises on your Audi A3. 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 component of the engine of your Audi A3, check this content page for more informations.
The effects of injector noise on Audi A3
Now that we have analyzed the diverse causes for injector noise on your Audi A3, we will end by stating the possible consequences of malfunctioning one or more of your injectors. Whether only one is clogged, 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 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 common consequences experienced by drivers is a distinctive 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 affect 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>