It is never relaxing to acknowledge an injector noise on your Audi Rs6. It is a noise that comes up frequently, usually when you accelerate or your engine is idling. However, this sign may be connected to multiple types of complications with your vehicle injectors. It may not be anything major, but when a repeated noise happens, you have to be sure. Especially since replacing your Audi Rs6’s injectors can be costly. That’s why our team chose to create this article in order to help you see more clearly, learn about the different conceivable failures and identify your trouble. To do this, we will first look at the normal running and usefulness of the injectors in your Audi Rs6, then at the conceivable reasons from which an injector noise may come.injector-noise-audi-rs6

Purposes of the injectors

Injectors are a very fundamental element of the operation of your engine unit. They were brought in to the modern vehicles 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 accurately (quantity of fuel injected, air/fuel mixture) via the analysis of the data obtained 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 get the best possible combustion in the cylinders.

The different triggers of a clicking or knocking noise caused by the injectors of your Audi Rs6

Finding out injector noises on your Audi Rs6 may come from different sources, we will now concentrate on the potential triggers of these. In most cases, 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 adopted to get rid of them. If you acknowledge another clicking noise but it is not from your injectors, we encourage you to go through this article about clicking noise on Audi Rs6 to discover the cause.

The causes for injector clicking or knocking noise Audi Rs6

A clicking or knocking noise from your injectors can be justified by different causes. In fact, the injectors of your Audi Rs6 have three main missions, to manage the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its mission is to deal with the air/fuel dosage and finally the homogeneity of the mixture, always with the objective of improving combustion. If one of these three attributes 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 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 Rs6. The main cause of these situations generally comes 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 comes from another element of the engine of your Audi Rs6, check this article for more informations.

The consequences of injector noise on Audi Rs6

Now that we have analyzed the several reasons for injector noise on your Audi Rs6, 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 effects which can promptly 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 basic effects 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 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 suggestions 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 changing your diesel fuel filter regularly>