It is hardly ever enjoyable to listen to an injector noise on your smart fortwo. It is a noise that happens frequently, usually when you accelerate or your engine is idling. However, this indicator may be connected to different sort of trouble with your car injectors. It may not be anything serious, but when a repeated noise shows up, you have to be sure. Specifically since repairing your smart fortwo’s injectors can be expensive. That’s why our team chose to write this content 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 smart fortwo, then at the conceivable causes from which an injector noise may come.
Attributes of the injectors
Injectors are a very fundamental element of the operation of your engine. They were released to the modern automobiles 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 accurately (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 objective 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 smart fortwo
Finding out injector noises on your smart fortwo may result from different locations, we will now look into the potential causes of these. In general, 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 eliminate them. If you listen to another clicking noise but it is not from your injectors, we encourage you to browse this content about clicking noise on smart fortwo to discover the cause.
The explanations for injector clicking or knocking noise smart fortwo
A clicking or knocking noise from your injectors can be justified by different explanations. In fact, the injectors of your smart fortwo have three main tasks, to manage the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its task is to manage the air/fuel dosage and at last the homogeneity of the mixture, always with the aim of improving combustion. If one of these three features is altered, the main role 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 trigger thoses knocking or clicking noises on your smart fortwo. The main cause of these problems usually comes from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible blockage will inevitably result in a malfunction of the injector. If after verifying, this noise comes from another element of the engine of your smart fortwo, have a look at this content for more infos.
The consequences of injector noise on smart fortwo
Now that we have reviewed the different causes for injector noise on your smart fortwo, we will end by stating the possible consequences of malfunctioning one or more of your injectors. Whether only one is clogged, 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 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 severe 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 recommendations to limit the risks connected 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>
