It is never pleasurable to acknowledge an injector noise on your Toyota Auris 2. It is a noise that appears frequently, usually when you accelerate or your engine is idling. However, this sign may be relating to different kind of concerns with your car injectors. It may not be anything severe, but when a continuing noise appears, you have to be sure. Especially since repairing your Toyota Auris 2’s injectors can be expensive. That’s why our team chose to create this article in order to support you see more clearly, learn about the different possible failures and determine your problem. To do this, we will first look at the normal function and usefulness of the injectors in your Toyota Auris 2, then at the possible triggers from which an injector noise may come.injector-noise-toyota-auris-2

Purposes of the injectors

Injectors are a very fundamental element of the operation of your engine motor. They were launched to the modern automobiles 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 precisely (quantity of fuel injected, air/fuel mixture) via the analysis of the data collected from the various sensors equipping the car (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 based on the injectors of your Toyota Auris 2

Listening injector noises on your Toyota Auris 2 may originate from different locations, we will now center on the potential triggers of these. Generally, 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 put into practice to stop them. If you acknowledge another clicking noise but it is not from your injectors, we encourage you to examine this article about clicking noise on Toyota Auris 2 to discover the trigger.

The causes for injector clicking or knocking noise Toyota Auris 2

A clicking or knocking noise from your injectors can be explained for different causes. Indeed, the injectors of your Toyota Auris 2 have three main missions, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its objective is to control the air/fuel dosage and finally the homogeneity of the mixture, always with the target of improving combustion. If one of these three tasks is altered, 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 resulting from bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Toyota Auris 2. The main trigger of these problems in most cases originates from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible blockage will inevitably lead to a malfunction of the injector. If after verifying, this noise originates from another element of the engine of your Toyota Auris 2, check this article for more informations.

The end result of injector noise on Toyota Auris 2

Now that we have reviewed the different reasons for injector noise on your Toyota Auris 2, we will end by stating the possible effects of malfunctioning one or more of your injectors. Whether only one is blocked, or broken, or your entire fuel rail is involved, you cannot escape these side effects which can promptly become critical….
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 consequences experienced by drivers is a serious loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will inevitably have a loss of power
Finally, you risk degrading 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 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 changing your diesel fuel filter regularly>