It is hardly ever enjoyable to listen an injector noise on your Volkswagen Passat . It is a noise that comes up regularly, usually when you accelerate or your engine is idling. However, this indicator may be connected to several types of problems with your vehicle injectors. It may not be anything major, but when a persistent noise happens, you have to be sure. Specifically since repairing your Volkswagen Passat ‘s injectors can be expensive. That’s why our team chose to create this content page in order to help you see more clearly, learn about the different conceivable failures and distinguish your problem. To do this, we will first look at the normal running and usefulness of the injectors in your Volkswagen Passat , then at the conceivable reasons from which an injector noise may come.
Purposes of the injectors
Injectors are a very fundamental part of the operation of your engine unit. They were introduced 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 collected from the various sensors equipping the vehicle (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 triggers of a clicking or knocking noise based on the injectors of your Volkswagen Passat
Listening injector noises on your Volkswagen Passat may come from different sources, we will now center on the potential triggers of these. In most cases, the typical noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be implemented to stop them. If you listen another clicking noise but it is not from your injectors, we encourage you to go through this content page about clicking noise on Volkswagen Passat to locate the trigger.
The explanations for injector clicking or knocking noise Volkswagen Passat
A clicking or knocking noise from your injectors can be justified by different explanations. In fact, the injectors of your Volkswagen Passat 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 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 characteristics is altered, 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 because of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will trigger thoses knocking or clicking noises on your Volkswagen Passat . The main trigger of these problems in most cases originates 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 originates from another element of the engine of your Volkswagen Passat , have a look at this content page for more informations.
The consequences of injector noise on Volkswagen Passat
Now that we have analyzed the diverse reasons for injector noise on your Volkswagen Passat , we will end by stating the possible end result 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 side effects which can quickly become major….
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 noticed by drivers is a serious loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will obviously have a loss of power
Finally, you risk deteriorating one of your pistons or your engine. Poor combustion will quickly damage your cylinders or pistons and your engine may tighten.
Here are three little suggestions 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 changing your diesel fuel filter regularly>
