It is never relaxing to listen an injector noise on your Nissan Micra. It is a noise that appears frequently, usually when you accelerate or your engine is idling. However, this indication may be related to multiple kind of concerns with your vehicle injectors. It may not be anything severe, but when a continuing noise comes out, you have to be sure. Specifically since replacing your Nissan Micra’s injectors can be expensive. 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 determine your problem. To do this, we will first look at the normal running and usefulness of the injectors in your Nissan Micra, then at the conceivable triggers from which an injector noise may come.
Functions of the injectors
Injectors are a very fundamental component of the operation of your engine motor. They were brought in to the modern cars 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 obtained from the various sensors equipping the vehicle (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 triggers of a clicking or knocking noise based on the injectors of your Nissan Micra
Experiencing injector noises on your Nissan Micra may come from different sources, we will now center on 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 used to eliminate them. If you listen another clicking noise but it is not from your injectors, we suggest you to examine this article about clicking noise on Nissan Micra to locate the cause.
The causes for injector clicking or knocking noise Nissan Micra
A clicking or knocking noise from your injectors can be justified by different causes. Indeed, the injectors of your Nissan Micra have three main missions, to control the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its mission is to deal with the air/fuel dosage and at last the homogeneity of the mixture, always with the objective of improving combustion. If one of these three tasks 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 Nissan Micra. The main cause of these problems generally originates from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible blockage will inevitably end up in a malfunction of the injector. If after checking, this noise originates from another part of the engine of your Nissan Micra, read this article for more infos.
The consequences of injector noise on Nissan Micra
Now that we have examined the different causes for injector noise on your Nissan Micra, we will end by stating the possible effects of malfunctioning one or more of your injectors. Whether only one is obstructed, or broken, or your entire fuel rail is involved, you cannot escape these effects which can fairly quickly become considerable….
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 regular effects 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 fairly quickly damage your cylinders or pistons and your engine may tighten.
Here are three little recommendations 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 swapping your diesel fuel filter regularly>
