It is never pleasurable to notice an injector noise on your Mercedes Benz GLC Class. It is a noise that arises regularly, usually when you accelerate or your engine is idling. However, this indication may be related to multiple types of concerns with your vehicle injectors. It may not be anything serious, but when a continuing noise comes out, you have to be sure. Specifically since repairing your Mercedes Benz GLC Class’s injectors can be expensive. That’s why our team decided to produce this content page 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 functioning and usefulness of the injectors in your Mercedes Benz GLC Class, then at the conceivable triggers from which an injector noise may come.injector-noise-mercedes-benz-glc-class

Functions of the injectors

Injectors are a very fundamental component of the operation of your engine unit. They were introduced to the modern vehicles 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 accumulated 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 reasons of a clicking or knocking noise based on the injectors of your Mercedes Benz GLC Class

Experiencing injector noises on your Mercedes Benz GLC Class may result from different origins, we will now concentrate on the potential triggers of these. Generally, the common noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be used to eliminate them. If you notice another clicking noise but it is not from your injectors, we recommend you to read this content page about clicking noise on Mercedes Benz GLC Class to locate the reason.

The explanations for injector clicking or knocking noise Mercedes Benz GLC Class

A clicking or knocking noise from your injectors can be explained for different explanations. Indeed, the injectors of your Mercedes Benz GLC Class have three main tasks, to control the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to ease its combustion. Then, its objective is to manage the air/fuel dosage and at last the homogeneity of the mixture, always with the objective of improving combustion. If one of these three functions is altered, 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 as a consequence of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Mercedes Benz GLC Class. The main reason of these concerns commonly originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably lead to a malfunction of the injector. If after checking, this noise originates from another part of the engine of your Mercedes Benz GLC Class, check this content page for more informations.

The consequences of injector noise on Mercedes Benz GLC Class

Now that we have analyzed the several causes for injector noise on your Mercedes Benz GLC Class, we will end by stating the possible effects 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 side effects which can fairly quickly 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 known repercussions noticed by drivers is a distinctive loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will inevitably have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will fairly quickly harm your cylinders or pistons and your engine may tighten.
Here are three little recommendations 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 changing your diesel fuel filter regularly>