It is rarely ever relaxing to listen an injector noise on your Peugeot 508. It is a noise that appears repeatedly, usually when you accelerate or your engine is idling. However, this indicator may be linked to different sort of trouble with your vehicle injectors. It may not be anything severe, but when a frequent noise appears, you have to be sure. Most importantly since replacing your Peugeot 508’s injectors can be costly. That’s why our team decided to produce this article in order to support you see more clearly, learn about the different plausible failures and distinguish your trouble. To do this, we will first look at the normal functioning and usefulness of the injectors in your Peugeot 508, then at the plausible causes from which an injector noise may come.injector-noise-peugeot-508

Attributes of the injectors

Injectors are a very useful element of the operation of your engine. They were released 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 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 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 get the best possible combustion in the cylinders.

The different triggers of a clicking or knocking noise caused by the injectors of your Peugeot 508

Discovering injector noises on your Peugeot 508 may result from different sources, we will now focus on the potential causes of these. In general, the regular noise of a faulty injector is of the snap type. Here are the different origins of these noises and the solutions to be used to get rid of them. If you listen another clicking noise but it is not from your injectors, we recommend you to examine this article about clicking noise on Peugeot 508 to discover the cause.

The explanations for injector clicking or knocking noise Peugeot 508

A clicking or knocking noise from your injectors can be explained for different explanations. In fact, the injectors of your Peugeot 508 have three main tasks, 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 functions is altered, 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 as a consequence of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will trigger thoses knocking or clicking noises on your Peugeot 508. The main cause of these problems usually originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably result in a malfunction of the injector. If after verifying, this noise originates from another element of the engine of your Peugeot 508, check this article for more infos.

The end result of injector noise on Peugeot 508

Now that we have examined the diverse reasons for injector noise on your Peugeot 508, we will end by stating the possible consequences 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 side effects which can promptly become considerable….
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 repercussions felt by drivers is a distinctive loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will surely have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will promptly harm your cylinders or pistons and your engine may tighten.
Here are three little tips to limit the risks associated 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>