It is hardly ever pleasant to perceive an injector noise on your Volkswagen Passat 7. It is a noise that arises repeatedly, usually when you accelerate or your engine is idling. However, this warning sign may be relating to multiple types of trouble with your automobile injectors. It may not be anything severe, but when a frequent noise comes out, you have to be sure. Especially since repairing your Volkswagen Passat 7’s injectors can be costly. That’s why our team chose to prepare this article content in order to support you see more clearly, learn about the different plausible failures and establish your problem. To do this, we will first look at the normal functioning and usefulness of the injectors in your Volkswagen Passat 7, then at the plausible causes from which an injector noise may come.
Benefits of the injectors
Injectors are a very fundamental part of the operation of your engine motor. They were introduced to the modern vehicles 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 accurately (quantity of fuel injected, air/fuel mixture) via the analysis of the data compiled from the various sensors equipping the automobile (engine temperature, acceleration level, engine speed, etc.). Their objective 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 Volkswagen Passat 7
Finding out injector noises on your Volkswagen Passat 7 may come from different origins, 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 sources of these noises and the solutions to be applied to eliminate them. If you perceive another clicking noise but it is not from your injectors, we encourage you to examine this article content about clicking noise on Volkswagen Passat 7 to find the reason.
The causes for injector clicking or knocking noise Volkswagen Passat 7
A clicking or knocking noise from your injectors can be justified by different causes. Indeed, the injectors of your Volkswagen Passat 7 have three main tasks, to control the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its goal is to control the air/fuel dosage and finally the homogeneity of the mixture, always with the goal of improving combustion. If one of these three functions 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 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 Volkswagen Passat 7. The main reason of these concerns generally originates from a particle that gets into the injectors. The accuracy 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 originates from another part of the engine of your Volkswagen Passat 7, have a look at this article content for more informations.
The repercussions of injector noise on Volkswagen Passat 7
Now that we have examined the several causes for injector noise on your Volkswagen Passat 7, we will end by stating the possible 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 consequences which can promptly become severe….
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 known effects felt by drivers is a significant loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will obviously have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will promptly damage your cylinders or pistons and your engine may tighten.
Here are three little recommendations 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>
