It is rarely ever pleasurable to listen to an injector noise on your Volkswagen Passat 8. It is a noise that comes up frequently, usually when you accelerate or your engine is idling. However, this sign may be related to several types of trouble with your vehicle injectors. It may not be anything serious, but when a repeated noise comes out, you have to be sure. Especially since replacing your Volkswagen Passat 8’s injectors can be costly. That’s why our team decided to produce this content 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 Volkswagen Passat 8, then at the conceivable causes from which an injector noise may come.
Attributes of the injectors
Injectors are a very important element of the operation of your engine unit. They were launched to the modern cars 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 opportunity, 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 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 origins of a clicking or knocking noise caused by the injectors of your Volkswagen Passat 8
Experiencing injector noises on your Volkswagen Passat 8 may come from different origins, we will now concentrate on the potential triggers of these. In general, 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 eliminate them. If you listen to another clicking noise but it is not from your injectors, we recommend you to read this content about clicking noise on Volkswagen Passat 8 to locate the cause.
The causes for injector clicking or knocking noise Volkswagen Passat 8
A clicking or knocking noise from your injectors can be justified by different causes. In fact, the injectors of your Volkswagen Passat 8 have three main missions, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to ease its combustion. Then, its objective is to control the air/fuel dosage and finally the homogeneity of the mixture, always with the aim of improving combustion. If one of these three features is modified, the main role 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 provoke thoses knocking or clicking noises on your Volkswagen Passat 8. The main cause of these situations usually 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 element of the engine of your Volkswagen Passat 8, browse this content for more infos.
The effects of injector noise on Volkswagen Passat 8
Now that we have analyzed the different reasons for injector noise on your Volkswagen Passat 8, we will end by stating the possible consequences 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 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 regular repercussions noticed 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 obviously 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 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>
