It is hardly ever enjoyable to experience an injector noise on your Subaru Outback. It is a noise that happens continually, usually when you accelerate or your engine is idling. However, this indication may be linked to several types of concerns with your car injectors. It may not be anything serious, but when a persistent noise appears, you have to be sure. Especially since fixing your Subaru Outback’s injectors can be expensive. That’s why our team decided to produce this content 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 functioning and usefulness of the injectors in your Subaru Outback, then at the plausible triggers from which an injector noise may come.
Functions of the injectors
Injectors are a very vital part of the operation of your engine. They were introduced to the modern vehicles about 20 years ago. Before their introduction, 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 opportunity, 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 car (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 triggers of a clicking or knocking noise caused by the injectors of your Subaru Outback
Hearing injector noises on your Subaru Outback may result from different sources, we will now concentrate on the potential causes of these. In general, 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 implemented to eliminate them. If you experience another clicking noise but it is not from your injectors, we advise you to browse this content about clicking noise on Subaru Outback to find the cause.
The explanations for injector clicking or knocking noise Subaru Outback
A clicking or knocking noise from your injectors can be explained for different explanations. Indeed, the injectors of your Subaru Outback have three main missions, to control the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its mission is to deal with the air/fuel dosage and finally the homogeneity of the mixture, always with the aim of improving combustion. If one of these three attributes is modified, the main purpose of the injectors will be disturbed 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 trigger thoses knocking or clicking noises on your Subaru Outback. The main cause of these situations usually comes 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 checking, this noise comes from another element of the engine of your Subaru Outback, check this content for more informations.
The effects of injector noise on Subaru Outback
Now that we have analyzed the several reasons for injector noise on your Subaru Outback, we will end by stating the possible end result 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 effects which can quickly become major….
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 felt by drivers is a distinctive 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 deteriorating one of your pistons or your engine. Poor combustion will quickly affect your cylinders or pistons and your engine may tighten.
Here are three little suggestions 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>
