It is never enjoyable to hear an injector noise on your Bmw Serie 7. It is a noise that happens frequently, usually when you accelerate or your engine is idling. However, this symptom may be connected to different kind of problems with your vehicle injectors. It may not be anything severe, but when a persistent noise shows up, you have to be sure. Specifically since replacing your Bmw Serie 7’s injectors can be costly. That’s why our team chose to write this article in order to support you see more clearly, learn about the different conceivable failures and identify your issue. To do this, we will first look at the normal running and usefulness of the injectors in your Bmw Serie 7, then at the conceivable causes from which an injector noise may come.
Attributes 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 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 ability, 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 collected from the various sensors equipping the vehicle (engine temperature, acceleration level, engine speed, etc.). Their purpose 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 Bmw Serie 7
Discovering injector noises on your Bmw Serie 7 may come from different sources, we will now focus on the potential triggers of these. In general, the regular noise of a faulty injector is of the snap type. Here are the several sources of these noises and the solutions to be implemented to get rid of them. If you hear another clicking noise but it is not from your injectors, we recommend you to browse this article about clicking noise on Bmw Serie 7 to locate the reason.
The reasons for injector clicking or knocking noise Bmw Serie 7
A clicking or knocking noise from your injectors can be explained for different reasons. Indeed, the injectors of your Bmw Serie 7 have three main tasks, to manage the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its task is to deal with the air/fuel dosage and at last the homogeneity of the mixture, always with the target of improving combustion. If one of these three functions is modified, 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 because of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Bmw Serie 7. The main reason of these situations generally originates from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible blockage will inevitably lead to a malfunction of the injector. If after verifying, this noise originates from another part of the engine of your Bmw Serie 7, read this article for more informations.
The repercussions of injector noise on Bmw Serie 7
Now that we have examined the different causes for injector noise on your Bmw Serie 7, 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 effects 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 common repercussions noticed by drivers is a noticeable 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 promptly affect 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>
