It is never pleasant to perceive an injector noise on your Nissan Sentra. It is a noise that arises regularly, usually when you accelerate or your engine is idling. However, this sign may be connected to different sort of problems with your automobile injectors. It may not be anything severe, but when a repeated noise appears, you have to be sure. Most importantly since fixing your Nissan Sentra’s injectors can be expensive. That’s why our team decided to prepare this article content in order to help you see more clearly, learn about the different possible failures and identify your problem. To do this, we will first look at the normal function and usefulness of the injectors in your Nissan Sentra, then at the possible causes from which an injector noise may come.
Functions of the injectors
Injectors are a very important part of the operation of your engine motor. They were introduced to the modern automobiles about 20 years ago. Before their arrival, 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 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 obtain the best possible combustion in the cylinders.
The different origins of a clicking or knocking noise caused by the injectors of your Nissan Sentra
Discovering injector noises on your Nissan Sentra may originate from different sources, we will now center on the potential causes of these. Generally, the usual noise of a faulty injector is of the snap type. Here are the several sources of these noises and the solutions to be applied to eliminate them. If you perceive another clicking noise but it is not from your injectors, we advise you to go through this article content about clicking noise on Nissan Sentra to discover the cause.
The causes for injector clicking or knocking noise Nissan Sentra
A clicking or knocking noise from your injectors can be justified by different causes. In fact, the injectors of your Nissan Sentra have three main missions, to control the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to ease its combustion. Then, its goal is to manage the air/fuel dosage and finally the homogeneity of the mixture, always with the target of improving combustion. If one of these three tasks is modified, the main purpose of the injectors will be disrupted and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders resulting from bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Nissan Sentra. The main cause of these problems commonly originates from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible obstruction will inevitably lead to a malfunction of the injector. If after verifying, this noise originates from another element of the engine of your Nissan Sentra, check this article content for more infos.
The end result of injector noise on Nissan Sentra
Now that we have reviewed the several reasons for injector noise on your Nissan Sentra, we will end by stating the possible end result 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 consequences which can fairly quickly become considerable….
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 regular effects noticed by drivers is a distinctive loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will obviously 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 tips 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>
