It is rarely ever pleasurable to acknowledge an injector noise on your Audi Rs4. It is a noise that appears repeatedly, usually when you accelerate or your engine is idling. However, this symptom may be linked to several types of trouble with your vehicle injectors. It may not be anything major, but when a recurrent noise appears, you have to be sure. Especially since repairing your Audi Rs4’s injectors can be expensive. That’s why our team decided to produce this article in order to support you see more clearly, learn about the different conceivable failures and distinguish your issue. To do this, we will first look at the normal function and usefulness of the injectors in your Audi Rs4, then at the conceivable triggers from which an injector noise may come.
Attributes of the injectors
Injectors are a very vital part of the operation of your engine. They were introduced to the modern automobiles about 20 years ago. Before their arrival, 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 accurately (quantity of fuel injected, air/fuel mixture) via the analysis of the data compiled from the various sensors equipping the vehicle (engine temperature, acceleration level, engine speed, etc.). Their objective 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 Rs4
Finding out injector noises on your Audi Rs4 may result from different origins, we will now center on the potential triggers of these. In most cases, the typical 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 stop them. If you acknowledge another clicking noise but it is not from your injectors, we advise you to read this article about clicking noise on Audi Rs4 to find the trigger.
The causes for injector clicking or knocking noise Audi Rs4
A clicking or knocking noise from your injectors can be explained for different causes. In fact, the injectors of your Audi Rs4 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 functions 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 Rs4. The main trigger of these situations usually originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably produce a malfunction of the injector. If after verifying, this noise originates from another part of the engine of your Audi Rs4, read this article for more informations.
The repercussions of injector noise on Audi Rs4
Now that we have analyzed the several causes for injector noise on your Audi Rs4, we will end by stating the possible end result 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 side 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 common effects 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 surely 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 tips 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 swapping your diesel fuel filter regularly>
