Cold air is more dense than hot air therefore is not only more fuel efficient but will give a little more power because it allows all the fuel to burn easier.
So on your diesel if you have less air low than required to burn all the fuel your injectors are putting in then all the unburnt fuel makes black smoke.
How do you make black smoke?
Burn heavy hydrocarbons or polymers. Rubber sheeting, roofing felt, rolls of polythene, tyres, tar blocks, large amounts of diesel, lubricating oil, bunker fuel or jet fuel. All these combust inefficiently in air and produce huge clouds of dense, carbon rich black smoke.
What are the causes of black smoke in a diesel engine?
Most common causes of black smoke are faulty injectors, a faulty injector pump, a bad air filter (causing not enough oxygen to be supplied), a bad EGR valve (causing the valves to clog) or even a bad turbocharger. Some of these are easy fixes.
Is black diesel smoke bad for the environment?
Indeed, diesel engines can emit a fair amount of nitrogen compounds and particulate matter as they burn diesel fuel. These facts combined to give diesel fuel a bad environmental name, even though it in fact emits lower amounts of carbon monoxide, hydrocarbons and carbon dioxide than does gasoline.
What does Black smoke mean?
Smoke Color Can Depict Fuel Type. Thick, black smoke indicates heavy fuels that are not being fully consumed. At times, black smoke can be an indicator that a manmade material is burning such as tires, vehicles or a structure. As a general rule, the darker the smoke, the more volatile the fire is.
What gives black smoke?
In general, a hotter fire will convert more fuel into elemental carbon, which forms into tiny particles that absorb light and appear in the sky as black smoke. The basic by-products of a fire are carbon dioxide and water. You can’t see carbon dioxide, but water in the air might make smoke appear lighter in color.
Why does black smoke come out of diesel?
Over-fueling is the primary cause of black smoke from the exhaust of a heavy duty diesel engine. Over-fueling can be caused by diesel fuel injector wear that enlarges the nozzle hole or erodes the injector needle and allows excess fuel to flow into the combustion chamber.
Can a dirty fuel filter cause black smoke?
A clogged filter will starve the engine of fuel while under power. Black smoke is excess fuel while under power. A clogged filter will not cause black smoke.
How do you fix black smoke from exhaust?
How To Get Rid Of Black Smoke From Exhaust Pipe?
- Clean Air System. The internal combustion process requires the correct amount of air intake to burn the fuel completely.
- Use Common -Rail Fuel Injection System.
- Use Fuel Additives.
- Get The Engine Rings Checked And Replaced If Damaged.
Is it bad for a diesel to roll coal?
So while the practice might be gross, and it’s definitely dangerous to blow toxic smoke into a pedestrian’s face, coal rolling is not going to turn Alaska into Death Valley any time soon. Because, despite the recent media frenzy, most diesel truck drivers don’t actually roll coal.
Can you get pulled over for rolling coal?
Cops can do little to ticket ‘rolling coal’ cruisers. The act violates the federal Clean Air Act, and officers who go through an eight-hour training course can issue tickets.
Do diesels last longer?
Diesel engines do last longer than petrol ones. Diesel is a light oil and when burned and used as fuel by the vehicle it lubricates the parts of the engine. This prolongs the life of the engine. While diesel engines typically last longer they are more costly to repair.