Black Smoke from Exhaust, Causes

Causes of Black Smoke from Exhaust

Before heading towards the reasons related to this problem, let’s first understand what exactly black smoke is? To commence, it is mainly the fumes consisting dirt, which blows out of the car’s exhaust system. So, if there are thick and black coloured vapours, this means that the fuel burns with the less amount of air in the engine.
Now the question is what causes the formation of black smoke out of exhaust? Well, the answer to this lies with the faulty car’s component like air filter and the fuel injectors.

1. Clogged Air Filters

With dust blocking the air filter, there are chances that sufficient air amount is not reaching the cylinder. As a result, more fuel is being burnt. And, ultimately this causes black smoke from exhaust irrespective of the fact that the fuel injectors are working properly.
Besides this, due to the heavy load or during hard acceleration also black smoke can be found, as the fuel is not injected at the right time.

2. Damaged Fuel Injectors

In case of the good fuel injector, the fuel is properly atomized, which means the fine droplets of fuel are spreading equally in the cylinder. However, if the injectors don’t close on time or they are clogged, there are chances that more fuel is injected in a certain area called as rich mixture area of the car. In this situation, even the amount of air is insufficient for the combustion of fuel due to blocked injectors (and the few opened ones inject only fuel).
Avoiding black smoke from exhaust
How to stop black smoke from exhaust
As a result, solid carbon is formed from the fuel not burnt, which is emitted as a black smoke from the tailpipe of the car.

3. Faulty MAF Sensors

The work of Mass Airflow sensor is to determine the volume of air entering the engine, which in turn, helps in measuring the amount of fuel to be injected inside the cylinder. This entire functioning is important for the complete combustion of fuel in the engine. Otherwise, a malfunctioning MAF sensor can lead to poor performing engine.

4. Bad EGR Valve

The EGR reduces emission of nitrogen oxides by re-circulating portion of an engine’s exhaust gas to the internal combustion engine. If this component is damaged, it emits all the black smoke out of exhaust.
Stopping black smoke from exhaust
Preventing black smoke from exhaust
Therefore, use of right oil and the regular maintenance of all these components is essential because this prevents engine wear out and black smoke from exhaust of the car.

Comments

Post a Comment

Popular posts from this blog

Shock Absorbers

Essentially, shock absorbers do two things. Apart from controlling the movement of springs and suspension, shock absorbers also keep your tyres in contact with the ground at all times. At rest or in motion, the bottom surface of your tyres is the only part of your vehicle in contact with the road.   When to replace shock absorbers: Longer stopping distance Having worn shock absorbers on your vehicle can increase your stopping distance by up to 20%. As you increase your traveling speed this will also increase the distance it takes your vehicle to completely stop. This 20% extra distance can be enough to cause a fatal incident and should be attended to as soon as possible. Swerving & nose-dives Does your car dip or swerve under braking? If so, you need to have your shock absorbers checked. If you do dip or swerve under braking it decrease your control over the car which can be very dangerous in wet weather. Vibrations Are you getting vibrations through ...
Read more

Car Radiator Care

  Car radiator  is one of the key components in a vehicle’s cooling system that is often overlooked. In the automotive world, the radiator can be likened to the heart of the cooling system. Just as the heart pumps blood throughout the body, the radiator ensures that coolant flows through the engine, keeping the temperature at a safe level. Without a healthy radiator, a car engine can overheat, causing costly damage and disrupting your driving pleasure. Therefore, in order to keep your car running at an optimal temperature, it is important to understand the role and take good care of the radiator. In this article, we will explore more about car radiators, from their functions, components, and the best way to maintain them. What is a Car Radiator? A car radiator is a part of a car’s cooling system that is responsible for regulating engine temperature.  Without a radiator, the engine will overheat, causing serious damage and shortening the life of the vehicle. A we...
Read more

Excessive Fuel Consumption Causes And Remedy

Excessive fuel consumption can be caused by a number of different things. So, There are dozens of problems that can lead to excessive fuel consumption, some of them are serious and some can be easily corrected. Consequently, Identifying the reasons your car has excessive fuel consumption and correcting them will save you money and help you to avoid costly repairs. Excessive fuel consumption can also be an indicator of a much more serious issue that if left, can develop into an expensive repair. Did you know that a vehicle can burn up to 30 per cent more fuel if proper maintenance is not performed on a regular schedule? As a result, Familiarizing yourself with the more common causes of poor fuel economy is a smart way to help keep your car running as economically and efficiently as possible. We all know the importance of regular car maintenance, but for many reasons, we just don’t do it often enough. Cars use the most fuel during initial acceleration, so if ...
Read more