It is hardly ever relaxing to experience an injector noise on your Subaru Forester. It is a noise that arises repeatedly, usually when you accelerate or your engine is idling. However, this indicator may be relating to different types of complications with your car injectors. It may not be anything serious, but when a repeated noise comes out, you have to be sure. Especially since repairing your Subaru Forester’s injectors can be costly. That’s why our team chose to produce this article in order to support you see more clearly, learn about the different possible failures and identify your trouble. To do this, we will first look at the normal running and usefulness of the injectors in your Subaru Forester, then at the possible causes from which an injector noise may come.
Benefits of the injectors
Injectors are a very vital part of the operation of your engine. They were introduced to the modern cars 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 accurately (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 goal 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 Subaru Forester
Listening injector noises on your Subaru Forester may result from different origins, we will now focus on the potential triggers of these. In most cases, 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 implemented to get rid of them. If you experience another clicking noise but it is not from your injectors, we suggest you to examine this article about clicking noise on Subaru Forester to locate the trigger.
The reasons for injector clicking or knocking noise Subaru Forester
A clicking or knocking noise from your injectors can be explained for different reasons. Indeed, the injectors of your Subaru Forester have three main missions, to manage the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to ease its combustion. Then, its objective is to manage the air/fuel dosage and at last the homogeneity of the mixture, always with the target of improving combustion. If one of these three features 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 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 Subaru Forester. The main trigger of these trouble usually comes from a particle that gets into the injectors. The accuracy 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 component of the engine of your Subaru Forester, browse this article for more informations.
The consequences of injector noise on Subaru Forester
Now that we have reviewed the different reasons for injector noise on your Subaru Forester, we will end by stating the possible end result of malfunctioning one or more of your injectors. Whether only one is obstructed, or broken, or your entire fuel rail is involved, you cannot escape these consequences which can fairly quickly 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 basic consequences noticed by drivers is a significant loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will surely have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will fairly quickly affect your cylinders or pistons and your engine may tighten.
Here are three little suggestions to limit the risks connected with 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>
