It is hardly ever enjoyable to experience an injector noise on your Peugeot 308. It is a noise that comes up frequently, usually when you accelerate or your engine is idling. However, this sign may be linked to multiple kind of complications with your car injectors. It may not be anything serious, but when a recurrent noise happens, you have to be sure. Especially since repairing your Peugeot 308’s injectors can be expensive. That’s why our team chose to produce this content page 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 functioning and usefulness of the injectors in your Peugeot 308, then at the plausible triggers from which an injector noise may come.injector-noise-peugeot-308

Functions of the injectors

Injectors are a very significant part of the operation of your engine motor. They were released to the modern vehicles about 20 years ago. Before their introduction, 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 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 car (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 get the best possible combustion in the cylinders.

The different triggers of a clicking or knocking noise coming from the injectors of your Peugeot 308

Discovering injector noises on your Peugeot 308 may result from different origins, we will now look into the potential triggers of these. In most cases, the common noise of a faulty injector is of the snap type. Here are the different sources of these noises and the solutions to be adopted to get rid of them. If you experience another clicking noise but it is not from your injectors, we encourage you to go through this content page about clicking noise on Peugeot 308 to discover the cause.

The explanations for injector clicking or knocking noise Peugeot 308

A clicking or knocking noise from your injectors can be justified by different explanations. Indeed, the injectors of your Peugeot 308 have three main missions, 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 goal of improving combustion. If one of these three tasks is modified, the main role of the injectors will be disrupted and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders resulting from bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will induce thoses knocking or clicking noises on your Peugeot 308. The main cause of these problems in most cases comes from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible blockage will inevitably produce a malfunction of the injector. If after checking, this noise comes from another part of the engine of your Peugeot 308, have a look at this content page for more infos.

The consequences of injector noise on Peugeot 308

Now that we have analyzed the different reasons for injector noise on your Peugeot 308, 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 repercussions 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 basic effects 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 undoubtedly have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will promptly damage your cylinders or pistons and your engine may tighten.
Here are three little recommendations 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>