How Do You Make A Diesel Blow Black Smoke?

Quicken your pace. Because the turbo lags behind the extra fuel, many trucks blast smoke when they suddenly go full speed. When towing a large weight in low gear, the effect is amplified. Try towing a 5000-pound trailer with your truck.

How do I get my diesel to roll coal?

“I’m curious how it is permitted for diesel pickup trucks to be tricked out to “roll coal,” given that you have to be Air Care certified before receiving license plates,” writes Pete from Boulder. If they can’t stop these kinds of pollutants, it seems like a waste to me. Trucks add to our ozone days, and it’s no fun to be stopped at a red light when the signal turns green and a black cloud surrounds everyone, especially those walking or riding a bike.”

In the past, I was also a victim of rolling coal. I won’t guess on the thoughts of truck owners who modify their vehicles in this manner, but those who spoke with me about it gave me various reasons why. “We just like the way it looks and like to see who can make the biggest plume,” for example. We believe that climate change is a hoax, and we enjoy annoying those who drive green vehicles. The engine produces more power for me. We don’t like it when cyclists take up the entire road. We’re protesting the abolition of oil jobs. We enjoy having complete control over our trucks and doing things that no one else can.”

Let’s take a closer look at rolling coal. It simply entails altering a newer diesel engine to pump more fuel into it than it can handle. This procedure produces a massive plume of thick, black exhaust that contains unburned fuel. Many older diesel truck engines built under previous air quality standards are capable of rolling coal without any changes. In 2017, the state of Colorado declared rolling coal unlawful, although only the act of rolling coal was made criminal, not the act of changing your car.

“In other words, you could be prosecuted if you released poisonous gases on someone, but not if you made your car capable of doing so,” said Danny Katz, executive director of CoPIRG. “I believe there was a proposal in the 2021 legislative session to upstream this legislation and make it illegal to alter or knowingly sell an altered car, but there were questions about who would be liable, and I don’t believe it was actually developed or introduced.”

A diesel vehicle can be converted to roll coal in a number of ways. Using a defeat device such as a “delete tuner” or “delete kit” is one of the most convenient methods. They readily connect to the truck’s OBD2 port, and the driver may modify several of the stock engine settings, including the fuel mixture that causes the black smoke, with the push of a button. If the driver needed the vehicle to pass Colorado’s AirCare emissions rules, the same device could quickly adjust the settings back to factory emissions.

“Yes, diesel owners could modify their vehicles several times if they wanted to waste time, energy, and money on a useless hobby,” says Dana TePoel, owner of Lake Arbor Auto in Westminster. “It appears absurd to us, yet it could happen,” says the author.

The US Environmental Protection Agency estimates that roughly 15% of diesel trucks in the US with original approved emissions have had their emissions systems tampered with, according to a report released late last year. Tampering with vehicle emissions controls or employing an aftermarket defeat device, according to the EPA Office of Enforcement and Compliance Assurance, is still unlawful. These defeat devices, according to the EPA, circumvent or otherwise render mandated emissions control systems inoperable, resulting in considerable increases in dangerous air emissions.

“About three times a week, a truck breaks down here,” TePoel added. “Older automobiles frequently fail due to high opacity,” says the expert (thick smoke). New ones frequently fail owing to missing or altered components, which are frequently missing or altered due to past owners.”

The EPA has recently targeted many big tuner manufacturers, including Premier Performance, which was fined $3 million earlier this year for marketing “defeat” devices. Companies who make tuners are no longer allowed to advertise publicly because to EPA restrictions, yet tuners that allow diesel users to roll coal still exist.

There are also more invasive methods for changing the engine. Another option to convert a diesel truck to roll coal, according to the website Truck of Mine, is to aggressively custom-tune it and install bigger injectors. During each injection cycle, injectors push a big amount of fuel into the engine, fooling your engine into thinking it needs more.

An officer may stop a vehicle with excessive emission, whether gas or diesel, issue a ticket, and compel the owner to make repairs, according to Colorado’s Department of Public Health and Environment. A violation of Colorado’s Nuisance Exhibition of Motor Vehicle Exhaust ordinance is punishable by a $100 fine. Operating a smoking car may result in further fines in several countries.

“We believe Colorado’s diesel emissions program has provided a major net benefit to the state’s clean air, and we certainly don’t want to see someone undo our clean-air progress with a campaign to dismantle the emissions program,” TePoel said. “It would be the same of banning all traffic signals because a few vehicles run red lights.”

In Colorado, the Smoking Vehicle Hotline program assists in identifying vehicles with excessive emissions and provides owners with information to urge them to make necessary repairs willingly.

Jayson Luber, a traffic anchor for Denver7, says he’s been reporting Denver traffic since Ben-Hur was in charge of a chariot. (We estimate it to be more than 25 years.) He’s fascinated with informing viewers about what’s going on with their driving and how to avoid difficulties that arise. Listen to his Driving You Crazy podcast on iTunes, Stitcher, Google Play, or Podbean, or follow him on Facebook, Twitter, or Instagram.

Does black smoke hurt a diesel?

Diesel engines are known for being filthy and producing a lot of black smoke. One of the most common images is of a diesel rig speeding down the highway, black smoke billowing from the stacks. That was pretty much viewed as normal in the 1960s, 1970s, and 1980s. All of this is unfortunate, because a diesel engine is more efficient and reliable than a gasoline engine.

The modern common-rail diesel engines are a significant improvement over older diesel engines, allowing for significant increases in horsepower and performance without producing a lot of black smoke.

The corollary to this is that if your diesel emits black smoke, it means something is wrong and needs to be corrected.

Not only does it make you look ugly, but it’s also bad for the environment, and it’ll cost you more in the long run because black smoke implies lower fuel mileage and more money out of your wallet. So, let’s look at what produces black smoke in diesel engines to see how we might lessen it.

Restricted Air

Fuel that hasn’t completely burned is seen as black smoke. When a diesel engine is working properly, it will totally burn the fuel, producing CO2 and water. As a result, black smoke indicates that something is preventing the fuel from totally burning. The appropriate amount of air is required to completely burn the fuel, which is a vital component of the combustion process. Incomplete fuel combustion results from a lack of air.

What may be the source of this suffocating air? It could be due to a clogged or limited air cleaner system.

Turbocharger Lag = Puffs of Black Smoke

When large diesels with huge loads are about to accelerate from a standstill, they often puff black smoke. This enormous diesel has massive turbochargers that require a long time and a lot of fuel to get up and running “Spool it up.” They’ll do this while they’re waiting for the ball to start rolling “Before the light turns green, they “roll coal,” trying to get the turbocharger up to speed before they move. This consumes a lot of gasoline in an engine that runs at low RPMs.

This problem occurs primarily in older trucks and is a design flaw. There isn’t much that can be done about it besides perhaps adding a combustion catalyst to the fuel to increase the amount of diesel burned at low RPMs.

Incorrect fuel/air ratio or injector problems

Black smoke is produced when a mechanical issue breaks the equilibrium between the proper quantity of fuel and the right amount of air being burned. It could be as simple as tweaking the injector timing or inspecting the EGR system to ensure the EGR valve does not require replacement.

If it’s not like that, you’re dealing with a mechanical issue. It’s possible that the valve clearances are incorrect. Alternatively, the injectors may need to be examined. The most critical component of a well-running diesel engine is the fuel injectors. You won’t receive the finest atomization of the fuel if they’re worn or plugged, which is what the engine relies on for its optimal performance.

Engine Deposits Will Cause Black Smoke

When a car is brand new, it performs at its best. Engine conditions deteriorate over time, resulting in accumulations of combustion product combustion in important regions such as injectors and combustion chambers. And all of this gets in the way of optimal performance.

Diesel engines are particularly susceptible to this since a) they operate for such a long time and b) diesel fuel does not arrive from the refinery with any detergent packets already added.

The solution is to regularly add a detergent component to your diesel fuel. Dee-Zol is a multipurpose treatment that cleans up deposits, reduces the quantity of fuel consumed inefficiently, and can even extend the life of your DPF (because less soot are being produced at any one time).

Is it illegal to roll coal?

The answer, according to the Environmental Protection Agency, is yes. “Aftermarket performance modifications” that disable emissions control systems, according to the EPA, are in violation of the Clean Air Act. The Environmental Protection Agency (EPA) released a report in 2020 that detailed the scope of the activity, saying that 550,000 diesel pickup trucks had tampered with emission controls, resulting in severe air pollution.

That much is obvious. However, executing that regulation is difficult due to the fact that violators must be caught red-handed.

That isn’t to say the EPA isn’t taking action. The agency sued EZ Lynk, a Cayman Islands firm that offers “defeat devices” that make the alteration process easier, in March. Last year, the EPA fined the Diesel Brothers, stars of a Discovery Channel reality show, more than $850,000 for circumventing emissions restrictions while customizing their trucks.

Is rolling coal bad for a diesel engine?

Rolling coal entails purposely discharging plumes of diesel smoke to make a political statement or for fun. While the engine’s performance and power are improved as a result of this method, the engine is eventually destroyed. Exhaust filters are also removed by coal rollers, which is a violation of federal clean air standards.

Is it bad for a diesel to roll coal?

Annapolis, Maryland – According to testimony given today by the Diesel Technology Forum, tampering with diesel vehicle emission controls to produce excessive amounts of black smoke emissions – colloquially referred to as “rolling coal” – is wasteful and damaging to the environment.

Can a stock diesel roll coal?

While environmentalists strive for the highest possible fuel efficiency, coal miners spend time and money striving for the worst.

It must be a diesel engine. A gasoline engine, no matter how modified, isn’t going to operate. Unburned fuel particles cause the smoke, and only diesel will suffice. Gasoline isn’t dark enough, thick enough, or obnoxious enough. However, not just any diesel truck is capable of transporting coal. As the truck pulling community knows, such a feat necessitates some alterations. The idea is to get more fuel into the engine, which will be burned up and blasted out as smoke right away. The smoke is therefore interpreted by witnesses as confirmation that the vehicle is actually powerful. Quality is just as important as quantity. The darker the smoke is, the more unburned gasoline it holds, and thus the better. A coal roller must purchase additional items in order to accomplish this achievement. Although an aspiring coal roller might be able to get away with using the truck’s factory exhaust, this doesn’t make much of a statement. The installation of chimney-pipe-style exhaust stacks in the truck bed appears to be the way to go.

Why do tuned diesels smoke?

It’s difficult to discuss diesel engines and diesel tuning without mentioning smoke. It’s a hot matter of argument, and there’s a lot more to it than you may think. Whether you’re willing to accept a little smoke for maximum performance or prefer to keep under the radar with a smoke-free tune, it’s a hot topic of debate.

Although visible smoke from a vehicle’s exhaust is not restricted to diesels, most of us associate smoke with the black smoke produced by some tuned diesel automobiles. Soot is black smoke that comes from the tailpipe when some fuel isn’t burned properly. This is usually due to one of two factors: a lack of oxygen or a lack of time for the fuel to burn.

Fueling is boosted in a tuned vehicle to ensure that all of the available air is used up for maximum power. This indicates that there is a lot of fuel in relation to the amount of air; the Air to Fuel Ratio is a measurement of how much fuel there is in relation to how much air there is (AFR). The lower the AFR, the more smoke can be seen.

There is a point at which the volume of air going through the engine is insufficient to allow all of the fuel to burn cleanly; it is at this time that the first haze of smoke appears. There will be more smoke if more fuel is added after this point.

At full throttle, when the most gasoline is injected for greatest power, black smoke is usually visible. Poorly adjusted automobiles, on the other hand, can emit thick black smoke practically all of the time. During regular cruising or mild driving, there is no need for a vehicle to emit black smoke; there should always be enough of air and a high AFR.

In general, the presence of black smoke does not necessarily indicate that an engine is in poor condition. It’s an immediately apparent sign of the vehicle’s Air to Fuel ratio; if you see an increase in black smoke levels, something is causing the Air to Fuel ratio to rise. Because the ECU controls the fueling, it’s much more likely that anything is lowering the amount of air available.

If you’ve recently had an ECU map and are only now stopping to smile and gaze forward, the thick black streak in your rearview mirror is most likely the result of a too exuberant tune running for an extended injection duration.

You most likely have a boost leak or blown a pipe if you can hear the turbo spooling up louder, hear a hiss, or recently heard a popping noise. If this is the case, you should be able to see visible oil around the leak’s path (commonly the VW clip connectors).

Another achilles heel of many diesel engines is the vacuum system. Because the turbo actuator is controlled by vacuum, even a small leak may result in underboost, and the VNT mechanism may become stuck, necessitating a new turbo.

Another source of black smoke is faulty injectors, which are commonly encountered in high-mileage engines (and lack of power). Some companies promote magic remedies that you may put in your diesel tank, but they rarely work on a high-pressure fuel system. The injector nozzles are a worn component that are usually past their prime after 100,000 km.

We constantly ask our customers this question, but it’s not a straightforward one for them to answer or for us to advise on the quantity of visible smoke that is acceptable. You can’t expect any engine setup to produce 100 percent of its power potential while also producing no visible smoke; as a rough estimate, you’ll have to lose up to 10% of peak power and torque to achieve this.

After a certain point (each engine is different), no amount of fuel will enhance the power output, and long before this point is reached, there is a period of diminishing returns, in which the amount of smoke produced for a little gain in power increases dramatically. Even if a customer doesn’t care about smoke or even says they want as much as possible, we still have a responsibility to ensure we aren’t adding fuel unnecessarily, thus testing is required to determine these ‘limits.’

Excessive smoking has consequences that extend beyond irritating the local cops and those following behind. Extra heat is generated, and this hot gas passes through the pistons, head, valves, manifold, and turbo, raising their surface temperatures. This heat has to go someplace, and as the water and oil cooling systems become saturated, the materials begin to fail, which is why VNT mechanisms and pistons melt or heads shatter.

Exhaust gas temperatures (EGT) can easily approach 1000°C, which is a serious worry because aluminum melts at 660°C. Fortunately, a decent engine package will be suitably cooled, and the cold new air from the intercooler will keep the surface temperatures below melting point. In ordinary tune, the piston bowl area is the part of the engine closest to melting, therefore we take great care not to push too hard and cause permanent engine damage.

It’s vital to keep in mind that, regardless of the tune, a car with a DPF will rarely create black smoke. Because the DPF can trap all of the soot produced by the engine, this is the case. If a car with a DPF has a’smoky’ tune, all of the smoke will clog the DPF instead of leaving via the tailpipe. This also means that if a car’s DPF emits visible smoke, it’s quite likely that the DPF has been removed or damaged.

What does GREY smoke mean?

White smoke indicates that the substance is off-gassing moisture and water vapor, indicating that the fire is only being started. Grey smoke indicates that the fire is dying out and that there are no more materials to burn.