It is hardly ever enjoyable to hear an injector noise on your Bmw Serie 3. It is a noise that appears repeatedly, usually when you accelerate or your engine is idling. However, this warning sign may be related to several kind of complications with your vehicle injectors. It may not be anything serious, but when a persistent noise happens, you have to be sure. Most importantly since repairing your Bmw Serie 3’s injectors can be expensive. That’s why our team decided to produce this content page in order to help you see more clearly, learn about the different possible failures and establish your problem. To do this, we will first look at the normal functioning and usefulness of the injectors in your Bmw Serie 3, then at the possible reasons from which an injector noise may come.
Benefits of the injectors
Injectors are a very vital component of the operation of your engine unit. They were released to the modern automobiles 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 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 accumulated 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 obtain the best possible combustion in the cylinders.
The different causes of a clicking or knocking noise based on the injectors of your Bmw Serie 3
Experiencing injector noises on your Bmw Serie 3 may originate from different locations, we will now concentrate on the potential causes of these. In most cases, the usual noise of a faulty injector is of the snap type. Here are the several sources of these noises and the solutions to be used to prevent them. If you hear another clicking noise but it is not from your injectors, we advise you to browse this content page about clicking noise on Bmw Serie 3 to locate the trigger.
The causes for injector clicking or knocking noise Bmw Serie 3
A clicking or knocking noise from your injectors can be explained for different causes. In fact, the injectors of your Bmw Serie 3 have three main missions, to manage the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to ease its combustion. Then, its mission is to deal with the air/fuel dosage and finally the homogeneity of the mixture, always with the target of improving combustion. If one of these three tasks 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 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 Bmw Serie 3. The main trigger of these situations commonly comes from a particle that gets into the injectors. The accuracy 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 Bmw Serie 3, check this content page for more informations.
The repercussions of injector noise on Bmw Serie 3
Now that we have reviewed the different causes for injector noise on your Bmw Serie 3, we will end by stating the possible effects 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 effects which can almost instantly become critical….
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 effects experienced by drivers is a significant 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 almost instantly affect your cylinders or pistons and your engine may tighten.
Here are three little suggestions 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>
