It is hardly ever pleasant to listen to an injector noise on your Mercedes Cla. It is a noise that arises continually, usually when you accelerate or your engine is idling. However, this sign may be linked to several kind of trouble with your automobile injectors. It may not be anything serious, but when a frequent noise happens, you have to be sure. Especially since fixing your Mercedes Cla’s injectors can be costly. That’s why our team decided to compose this article in order to support you see more clearly, learn about the different conceivable failures and determine your trouble. To do this, we will first look at the normal function and usefulness of the injectors in your Mercedes Cla, then at the conceivable triggers from which an injector noise may come.
Benefits of the injectors
Injectors are a very vital part of the operation of your engine motor. They were introduced to the modern vehicles about 20 years ago. Before their introduction, 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 accumulated from the various sensors equipping the automobile (engine temperature, acceleration level, engine speed, etc.). Their aim 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 Mercedes Cla
Hearing injector noises on your Mercedes Cla may come from different locations, we will now concentrate on the potential causes of these. In general, the usual noise of a faulty injector is of the snap type. Here are the different sources of these noises and the solutions to be put into practice to prevent them. If you listen to another clicking noise but it is not from your injectors, we encourage you to browse this article about clicking noise on Mercedes Cla to discover the cause.
The reasons for injector clicking or knocking noise Mercedes Cla
A clicking or knocking noise from your injectors can be explained for different reasons. Indeed, the injectors of your Mercedes Cla have three main tasks, to manage 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 finally the homogeneity of the mixture, always with the goal of improving combustion. If one of these three attributes 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 as a consequence of bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will induce thoses knocking or clicking noises on your Mercedes Cla. The main cause of these situations 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 end in a malfunction of the injector. If after verifying, this noise comes from another part of the engine of your Mercedes Cla, read this article for more informations.
The effects of injector noise on Mercedes Cla
Now that we have reviewed the several reasons for injector noise on your Mercedes Cla, we will end by stating the possible side effects 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 repercussions which can almost instantly become serious….
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 common consequences experienced by drivers is a noticeable 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 almost instantly 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 changing your diesel fuel filter regularly>