It is rarely ever relaxing to acknowledge an injector noise on your Audi S5. It is a noise that appears regularly, usually when you accelerate or your engine is idling. However, this indication may be relating to several types of concerns with your car injectors. It may not be anything serious, but when a repeated noise happens, you have to be sure. Especially since repairing your Audi S5’s injectors can be expensive. That’s why our team chose to produce this article content 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 running and usefulness of the injectors in your Audi S5, then at the plausible causes from which an injector noise may come.
Benefits of the injectors
Injectors are a very important component of the operation of your engine motor. They were introduced to the modern vehicles about 20 years ago. Before their appearance, 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 precisely (quantity of fuel injected, air/fuel mixture) via the analysis of the data received from the various sensors equipping the car (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 get the best possible combustion in the cylinders.
The different triggers of a clicking or knocking noise based on the injectors of your Audi S5
Listening injector noises on your Audi S5 may originate from different locations, we will now look into the potential causes of these. In most cases, the typical noise of a faulty injector is of the snap type. Here are the different origins 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 examine this article content about clicking noise on Audi S5 to locate the reason.
The reasons for injector clicking or knocking noise Audi S5
A clicking or knocking noise from your injectors can be explained for different reasons. Indeed, the injectors of your Audi S5 have three main missions, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to ease its combustion. Then, its objective is to manage 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 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 induce thoses knocking or clicking noises on your Audi S5. The main reason of these concerns usually comes from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible blockage will inevitably result in a malfunction of the injector. If after verifying, this noise comes from another component of the engine of your Audi S5, have a look at this article content for more informations.
The end result of injector noise on Audi S5
Now that we have analyzed the diverse reasons for injector noise on your Audi S5, we will end by stating the possible side effects of malfunctioning one or more of your injectors. Whether only one is obstructed, or damaged, or your entire fuel rail is involved, you cannot escape these repercussions which can quickly become serious….
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 repercussions noticed by drivers is a serious 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 quickly harm your cylinders or pistons and your engine may tighten.
Here are three little suggestions to limit the risks relating 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 swapping your diesel fuel filter regularly>
