It is never pleasant to perceive an injector noise on your Volkswagen Up!. It is a noise that happens frequently, usually when you accelerate or your engine is idling. However, this indicator may be relating to multiple sort of concerns with your car injectors. It may not be anything severe, but when a repeated noise happens, you have to be sure. Especially since replacing your Volkswagen Up!’s injectors can be expensive. That’s why our team chose to prepare this article in order to help you see more clearly, learn about the different possible failures and determine your problem. To do this, we will first look at the normal function and usefulness of the injectors in your Volkswagen Up!, then at the possible causes from which an injector noise may come.
Purposes of the injectors
Injectors are a very vital element of the operation of your engine motor. They were launched 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 accurately (quantity of fuel injected, air/fuel mixture) via the analysis of the data compiled from the various sensors equipping the car (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 based on the injectors of your Volkswagen Up!
Listening injector noises on your Volkswagen Up! may result from different locations, we will now focus on the potential causes 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 implemented to eliminate them. If you perceive another clicking noise but it is not from your injectors, we suggest you to read this article about clicking noise on Volkswagen Up! to discover the cause.
The explanations for injector clicking or knocking noise Volkswagen Up!
A clicking or knocking noise from your injectors can be justified by different explanations. In fact, the injectors of your Volkswagen Up! 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 characteristics is altered, 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 trigger thoses knocking or clicking noises on your Volkswagen Up!. The main cause of these situations commonly 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 element of the engine of your Volkswagen Up!, browse this article for more infos.
The effects of injector noise on Volkswagen Up!
Now that we have examined the diverse causes for injector noise on your Volkswagen Up!, 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 quickly become critical….
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 regular effects felt by drivers is a distinctive loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will inevitably 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 relating 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 changing your diesel fuel filter regularly>
