It is hardly ever pleasant to listen an injector noise on your Volkswagen Golf 4. It is a noise that happens continually, usually when you accelerate or your engine is idling. However, this indicator may be related to several sort of complications with your automobile injectors. It may not be anything serious, but when a persistent noise appears, you have to be sure. Most importantly since repairing your Volkswagen Golf 4’s injectors can be expensive. That’s why our team chose to prepare this content page in order to help you see more clearly, learn about the different plausible failures and distinguish your trouble. To do this, we will first look at the normal running and usefulness of the injectors in your Volkswagen Golf 4, then at the plausible causes from which an injector noise may come.
Benefits of the injectors
Injectors are a very fundamental element of the operation of your engine motor. They were released to the modern automobiles about 20 years ago. Before their introduction, more conventional carburettor-type intake systems were used, 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 received 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 reasons of a clicking or knocking noise coming from the injectors of your Volkswagen Golf 4
Finding out injector noises on your Volkswagen Golf 4 may originate from different origins, we will now focus on the potential triggers of these. In general, the common 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 listen another clicking noise but it is not from your injectors, we advise you to go through this content page about clicking noise on Volkswagen Golf 4 to discover the trigger.
The reasons for injector clicking or knocking noise Volkswagen Golf 4
A clicking or knocking noise from your injectors can be explained for different reasons. In fact, the injectors of your Volkswagen Golf 4 have three main tasks, 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 deal with the air/fuel dosage and at last the homogeneity of the mixture, always with the target of improving combustion. If one of these three functions 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 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 Golf 4. The main trigger of these situations generally comes from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible blockage will inevitably end up in a malfunction of the injector. If after verifying, this noise comes from another part of the engine of your Volkswagen Golf 4, check this content page for more infos.
The end result of injector noise on Volkswagen Golf 4
Now that we have reviewed the different causes for injector noise on your Volkswagen Golf 4, we will end by stating the possible side effects of malfunctioning one or more of your injectors. Whether only one is blocked, or broken, or your entire fuel rail is involved, you cannot escape these consequences 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 regular effects felt 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 degrading 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 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>
