It is never enjoyable to listen an injector noise on your Lexus RX. It is a noise that comes up continually, usually when you accelerate or your engine is idling. However, this indicator may be related to different kind of complications with your vehicle injectors. It may not be anything severe, but when a persistent noise happens, you have to be sure. Specifically since replacing your Lexus RX’s injectors can be costly. That’s why our team chose to compose this article 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 Lexus RX, then at the plausible reasons from which an injector noise may come.
Benefits of the injectors
Injectors are a very fundamental part 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 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 causes of a clicking or knocking noise based on the injectors of your Lexus RX
Listening injector noises on your Lexus RX may originate from different locations, we will now focus on the potential triggers of these. Generally, the common noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be put into practice to stop them. If you listen another clicking noise but it is not from your injectors, we recommend you to browse this article about clicking noise on Lexus RX to discover the cause.
The causes for injector clicking or knocking noise Lexus RX
A clicking or knocking noise from your injectors can be explained for different causes. In fact, the injectors of your Lexus RX 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 mission is to control the air/fuel dosage and finally the homogeneity of the mixture, always with the objective of improving combustion. If one of these three functions is altered, the main purpose 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 Lexus RX. The main cause of these problems commonly originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably end in a malfunction of the injector. If after verifying, this noise originates from another part of the engine of your Lexus RX, read this article for more informations.
The side effects of injector noise on Lexus RX
Now that we have examined the different reasons for injector noise on your Lexus RX, we will end by stating the possible side effects of malfunctioning one or more of your injectors. Whether only one is clogged, or damaged, or your entire fuel rail is involved, you cannot escape these consequences which can quickly become serious….
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 known consequences experienced by drivers is a significant loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will obviously 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 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 changing your diesel fuel filter regularly>
