It is hardly ever pleasant to listen an injector noise on your Peugeot 407. It is a noise that arises regularly, usually when you accelerate or your engine is idling. However, this indication may be relating to multiple kind of problems with your car injectors. It may not be anything severe, but when a continuing noise arises, you have to be sure. Most importantly since fixing your Peugeot 407’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 establish your issue. To do this, we will first look at the normal functioning and usefulness of the injectors in your Peugeot 407, then at the possible causes from which an injector noise may come.
Functions of the injectors
Injectors are a very vital element of the operation of your engine unit. They were introduced to the modern vehicles about 20 years ago. Before their appearance, 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 collected 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 obtain the best possible combustion in the cylinders.
The different triggers of a clicking or knocking noise caused by the injectors of your Peugeot 407
Discovering injector noises on your Peugeot 407 may come from different sources, we will now concentrate on the potential causes of these. In most cases, the regular 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 eliminate 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 407 to locate the cause.
The causes for injector clicking or knocking noise Peugeot 407
A clicking or knocking noise from your injectors can be explained for different causes. In fact, the injectors of your Peugeot 407 have three main tasks, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to ease its combustion. Then, its objective is to deal with the air/fuel dosage and at last the homogeneity of the mixture, always with the goal 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 as a consequence of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will induce thoses knocking or clicking noises on your Peugeot 407. The main cause of these concerns commonly 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 component of the engine of your Peugeot 407, browse this article for more infos.
The effects of injector noise on Peugeot 407
Now that we have examined the different reasons for injector noise on your Peugeot 407, we will end by stating the possible consequences 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 effects which can fairly quickly become serious….
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 common consequences 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 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 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>
