It is never pleasurable to perceive an injector noise on your Toyota Land Cruiser Serie 120. It is a noise that happens repeatedly, usually when you accelerate or your engine is idling. However, this warning sign may be related to different types of problems with your vehicle injectors. It may not be anything major, but when a persistent noise appears, you have to be sure. Especially since fixing your Toyota Land Cruiser Serie 120’s injectors can be expensive. That’s why our team chose to write this content page in order to help you see more clearly, learn about the different conceivable failures and determine your trouble. To do this, we will first look at the normal functioning and usefulness of the injectors in your Toyota Land Cruiser Serie 120, then at the conceivable reasons from which an injector noise may come.injector-noise-toyota-land-cruiser-serie-120

Benefits of the injectors

Injectors are a very significant part of the operation of your engine unit. 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 possibility, 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 compiled 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 obtain the best possible combustion in the cylinders.

The different triggers of a clicking or knocking noise based on the injectors of your Toyota Land Cruiser Serie 120

Discovering injector noises on your Toyota Land Cruiser Serie 120 may result from different origins, we will now center on the potential triggers of these. In most cases, the common noise of a faulty injector is of the snap type. Here are the several sources of these noises and the solutions to be implemented to eliminate them. If you perceive another clicking noise but it is not from your injectors, we encourage you to read this content page about clicking noise on Toyota Land Cruiser Serie 120 to locate the reason.

The reasons for injector clicking or knocking noise Toyota Land Cruiser Serie 120

A clicking or knocking noise from your injectors can be justified by different reasons. Indeed, the injectors of your Toyota Land Cruiser Serie 120 have three main tasks, to control the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to ease its combustion. Then, its objective is to control the air/fuel dosage and finally the homogeneity of the mixture, always with the aim of improving combustion. If one of these three characteristics is modified, 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 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 Toyota Land Cruiser Serie 120. The main reason of these situations usually 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 Land Cruiser Serie 120, check this content page for more informations.

The effects of injector noise on Toyota Land Cruiser Serie 120

Now that we have analyzed the diverse reasons for injector noise on your Toyota Land Cruiser Serie 120, we will end by stating the possible effects 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 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 known repercussions felt by drivers is a severe loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will obviously have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will promptly affect your cylinders or pistons and your engine may tighten.
Here are three little recommendations 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>