It is never pleasurable to perceive an injector noise on your Volkswagen Scirocco. It is a noise that comes up regularly, usually when you accelerate or your engine is idling. However, this warning sign may be relating to multiple sort of complications with your vehicle injectors. It may not be anything severe, but when a recurrent noise shows up, you have to be sure. Most importantly since fixing your Volkswagen Scirocco’s injectors can be costly. That’s why our team chose to produce this content page in order to help you see more clearly, learn about the different conceivable failures and identify your issue. To do this, we will first look at the normal functioning and usefulness of the injectors in your Volkswagen Scirocco, then at the conceivable causes from which an injector noise may come.
Purposes of the injectors
Injectors are a very important element of the operation of your engine. They were launched to the modern automobiles about 20 years ago. Before their appearance, 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 possibility, 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 obtained from the various sensors equipping the vehicle (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 get the best possible combustion in the cylinders.
The different triggers of a clicking or knocking noise caused by the injectors of your Volkswagen Scirocco
Experiencing injector noises on your Volkswagen Scirocco may result from different sources, we will now look into the potential causes of these. Generally, the regular noise of a faulty injector is of the snap type. Here are the different sources of these noises and the solutions to be adopted to eliminate them. If you perceive another clicking noise but it is not from your injectors, we recommend you to read this content page about clicking noise on Volkswagen Scirocco to locate the trigger.
The causes for injector clicking or knocking noise Volkswagen Scirocco
A clicking or knocking noise from your injectors can be justified by different causes. Indeed, the injectors of your Volkswagen Scirocco have three main missions, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its task 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 functionality of the injectors will be disturbed 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 Scirocco. The main trigger of these trouble generally comes from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible blockage will inevitably produce a malfunction of the injector. If after verifying, this noise comes from another element of the engine of your Volkswagen Scirocco, have a look at this content page for more informations.
The side effects of injector noise on Volkswagen Scirocco
Now that we have reviewed the several causes for injector noise on your Volkswagen Scirocco, we will end by stating the possible consequences 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 quickly become critical….
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 experienced by drivers is a significant loss of power. Indeed, 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 quickly harm 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>
