It is hardly ever enjoyable to perceive an injector noise on your Lexus NX. It is a noise that appears repeatedly, usually when you accelerate or your engine is idling. However, this indicator may be relating to different types of complications with your vehicle injectors. It may not be anything severe, but when a frequent noise arises, you have to be sure. Specifically since fixing your Lexus NX’s injectors can be costly. That’s why our team chose to produce this article in order to help you see more clearly, learn about the different plausible failures and identify your issue. To do this, we will first look at the normal running and usefulness of the injectors in your Lexus NX, then at the plausible causes from which an injector noise may come.
Purposes of the injectors
Injectors are a very fundamental element of the operation of your engine motor. They were introduced to the modern vehicles about 20 years ago. Before their arrival, 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 ability, 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 vehicle (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 get the best possible combustion in the cylinders.
The different origins of a clicking or knocking noise caused by the injectors of your Lexus NX
Listening injector noises on your Lexus NX may come from different origins, we will now concentrate on the potential triggers of these. Generally, 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 used to eliminate them. If you perceive another clicking noise but it is not from your injectors, we advise you to browse this article about clicking noise on Lexus NX to find the cause.
The explanations for injector clicking or knocking noise Lexus NX
A clicking or knocking noise from your injectors can be justified by different explanations. In fact, the injectors of your Lexus NX have three main tasks, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its goal is to control 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 altered, the main functionality of the injectors will be disturbed and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders as a consequence of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will induce thoses knocking or clicking noises on your Lexus NX. The main cause of these trouble generally originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably cause a malfunction of the injector. If after verifying, this noise originates from another component of the engine of your Lexus NX, have a look at this article for more infos.
The end result of injector noise on Lexus NX
Now that we have reviewed the several reasons for injector noise on your Lexus NX, we will end by stating the possible effects of malfunctioning one or more of your injectors. Whether only one is blocked, or damaged, or your entire fuel rail is involved, you cannot escape these consequences which can promptly become severe….
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 regular effects noticed 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 undoubtedly have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will promptly harm your cylinders or pistons and your engine may tighten.
Here are three little suggestions to limit the risks linked 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>
