It is hardly ever relaxing to listen to an injector noise on your Peugeot 307. It is a noise that happens frequently, usually when you accelerate or your engine is idling. However, this sign may be related to several sort of complications with your car injectors. It may not be anything severe, but when a recurrent noise arises, you have to be sure. Most importantly since replacing your Peugeot 307’s injectors can be expensive. That’s why our team chose to create this article in order to support you see more clearly, learn about the different possible failures and distinguish your problem. To do this, we will first look at the normal function and usefulness of the injectors in your Peugeot 307, then at the possible reasons from which an injector noise may come.injector-noise-peugeot-307

Purposes of the injectors

Injectors are a very vital part of the operation of your engine. They were introduced to the modern automobiles about 20 years ago. Before their appearance, 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 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 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 coming from the injectors of your Peugeot 307

Experiencing injector noises on your Peugeot 307 may come from different sources, we will now concentrate on 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 used to prevent them. If you listen to another clicking noise but it is not from your injectors, we recommend you to examine this article about clicking noise on Peugeot 307 to find the cause.

The reasons for injector clicking or knocking noise Peugeot 307

A clicking or knocking noise from your injectors can be explained for different reasons. In fact, the injectors of your Peugeot 307 have three main missions, to manage the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its task is to manage the air/fuel dosage and finally the homogeneity of the mixture, always with the target of improving combustion. If one of these three features is altered, the main role 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 307. The main cause of these problems commonly comes from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible blockage will inevitably end up in a malfunction of the injector. If after checking, this noise comes from another part of the engine of your Peugeot 307, read this article for more informations.

The side effects of injector noise on Peugeot 307

Now that we have analyzed the diverse reasons for injector noise on your Peugeot 307, we will end by stating the possible side effects of malfunctioning one or more of your injectors. Whether only one is clogged, or damaged, or your entire fuel rail is involved, you cannot escape these side effects which can fairly quickly become considerable….
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 experienced by drivers is a noticeable loss of power. In fact, 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 fairly quickly harm 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 swapping your diesel fuel filter regularly>