It is hardly ever pleasurable to listen an injector noise on your BMW 7 Series. It is a noise that comes up regularly, usually when you accelerate or your engine is idling. However, this warning sign may be linked to multiple types of complications with your automobile injectors. It may not be anything serious, but when a continuing noise happens, you have to be sure. Specifically since fixing your BMW 7 Series’s injectors can be costly. That’s why our team decided to write this content in order to support you see more clearly, learn about the different possible failures and establish your problem. To do this, we will first look at the normal running and usefulness of the injectors in your BMW 7 Series, then at the possible triggers from which an injector noise may come.
Attributes of the injectors
Injectors are a very vital part of the operation of your engine motor. They were introduced to the modern cars about 20 years ago. Before their arrival, 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 received from the various sensors equipping the automobile (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 obtain the best possible combustion in the cylinders.
The different reasons of a clicking or knocking noise based on the injectors of your BMW 7 Series
Finding out injector noises on your BMW 7 Series may originate from different sources, we will now look into the potential causes of these. Generally, the typical 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 eliminate them. If you listen another clicking noise but it is not from your injectors, we suggest you to examine this content about clicking noise on BMW 7 Series to locate the cause.
The explanations for injector clicking or knocking noise BMW 7 Series
A clicking or knocking noise from your injectors can be explained for different explanations. In fact, the injectors of your BMW 7 Series have three main missions, 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 control 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 functionality of the injectors will be disrupted and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders due to bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will trigger thoses knocking or clicking noises on your BMW 7 Series. The main cause of these situations in most cases comes 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 comes from another component of the engine of your BMW 7 Series, check this content for more informations.
The end result of injector noise on BMW 7 Series
Now that we have reviewed the diverse causes for injector noise on your BMW 7 Series, we will end by stating the possible side effects of malfunctioning one or more of your injectors. Whether only one is obstructed, or damaged, or your entire fuel rail is involved, you cannot escape these effects which can almost instantly 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 severe 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 deteriorating one of your pistons or your engine. Poor combustion will almost instantly damage your cylinders or pistons and your engine may tighten.
Here are three little tips to limit the risks linked 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>
