It is rarely ever pleasant to experience an injector noise on your smart forfour. It is a noise that comes up repeatedly, usually when you accelerate or your engine is idling. However, this indicator may be connected to multiple sort of trouble with your vehicle injectors. It may not be anything major, but when a recurrent noise shows up, you have to be sure. Specifically since repairing your smart forfour’s injectors can be costly. That’s why our team decided to prepare this article in order to help 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 smart forfour, then at the conceivable triggers from which an injector noise may come.
Attributes of the injectors
Injectors are a very useful element of the operation of your engine. They were released to the modern automobiles 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 opportunity, 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 collected 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 caused by the injectors of your smart forfour
Experiencing injector noises on your smart forfour may result from different locations, we will now focus on the potential triggers of these. In general, the regular noise of a faulty injector is of the snap type. Here are the different sources of these noises and the solutions to be used to eliminate them. If you experience another clicking noise but it is not from your injectors, we recommend you to examine this article about clicking noise on smart forfour to locate the reason.
The reasons for injector clicking or knocking noise smart forfour
A clicking or knocking noise from your injectors can be justified by different reasons. In fact, the injectors of your smart forfour 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 aim of improving combustion. If one of these three functions is altered, 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 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 smart forfour. The main reason of these trouble commonly 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 component of the engine of your smart forfour, read this article for more infos.
The end result of injector noise on smart forfour
Now that we have reviewed the diverse causes for injector noise on your smart forfour, we will end by stating the possible side 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 quickly 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 common effects felt by drivers is a significant loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will surely 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 tips 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 swapping your diesel fuel filter regularly>
