It is rarely ever pleasurable to listen to an injector noise on your Mercedes Viano. It is a noise that arises continually, usually when you accelerate or your engine is idling. However, this sign may be linked to several types of concerns with your car injectors. It may not be anything major, but when a frequent noise happens, you have to be sure. Specifically since fixing your Mercedes Viano’s injectors can be costly. That’s why our team decided to write this content in order to help you see more clearly, learn about the different possible failures and identify your problem. To do this, we will first look at the normal function and usefulness of the injectors in your Mercedes Viano, then at the possible causes from which an injector noise may come.
Purposes of the injectors
Injectors are a very useful element of the operation of your engine. They were introduced to the modern vehicles about 20 years ago. Before their appearance, 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 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 triggers of a clicking or knocking noise based on the injectors of your Mercedes Viano
Experiencing injector noises on your Mercedes Viano may come from different locations, we will now focus on the potential triggers of these. Generally, the regular noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be applied to prevent 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 Mercedes Viano to discover the reason.
The reasons for injector clicking or knocking noise Mercedes Viano
A clicking or knocking noise from your injectors can be justified by different reasons. Indeed, the injectors of your Mercedes Viano have three main tasks, to manage the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its task 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 tasks is modified, 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 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 Mercedes Viano. The main reason 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 obstruction will inevitably result in a malfunction of the injector. If after checking, this noise comes from another part of the engine of your Mercedes Viano, have a look at this content for more infos.
The effects of injector noise on Mercedes Viano
Now that we have analyzed the several causes for injector noise on your Mercedes Viano, we will end by stating the possible end result 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 side effects which can promptly become major….
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 basic consequences felt by drivers is a distinctive 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 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 swapping your diesel fuel filter regularly>
