What Is Diesel Bug?

What exactly is a diesel bug? A single microorganism or a consortium (group) of microorganisms that grow on fuels is known as diesel bug. Bacteria, filamentous moulds, and yeasts are all included. They devour the hydrocarbons in the fuel and produce biomass, biofilms, and harmful by-products in the process.

How do you get rid of diesel bug?

The microscopic species that cause the slime in diesel fuel are known as the ‘Diesel Bug.’ Bacteria, viruses, fungus, and yeasts are examples of microbiological species that can accelerate rapidly under the correct conditions. Water (from condensation), fuel (hydrocarbons), and normally milder temperatures in the UK are the characteristics they prefer. Fuel-related issues thrive in this environment.

We’ve seen several issues occur in the past as a result of the diesel bug in a variety of applications. It’s preferable if our technical staff checks for flaws in the gasoline and then advises on the best course of action to correct the problem.

  • Filters and gauges are constantly clogged with a sticky substance that can be black or brown.

The best option for treating the diesel bug is to use exocet Anti-Bug. To ‘kill’ or’shock treat’ the infestation, use 1 litre to treat 5,000 litres of fuel, followed by 1 litre of maintenance protection to treat 20,000 litres of fuel. The best ‘kill’ strategy is to treat the fuel already in the tank, then add extra fresh fuel on top to coat all internal parts of the tank (possible breeding grounds), and leave for 48 hours. After this time, the fuel is OK to use, but you’ll need to change the fuel filters on a weekly basis as the bugs die.

As the saying goes, “prevention is better than cure,” and it is recommended that enterprises dose the exocet Anti-Bug product at protection levels to avoid downtime and pipe/tank corrosion costs associated with a bug infestation. Businesses that rely on vehicles to meet contract deadlines or backup generators to feed the national grid, for example, may be harmed by this cost.

Exocet Anti-Bug preventative dose is significantly less expensive than shock treatment ‘kill’ and will give you piece of mind.

Mercedes-Benz, DAF, MAN, NATO, Deutz, Shell, the Swiss army, and others have certified Exocet Anti-Bug as a fuel additive.

How common is diesel bug?

Have you noticed an increase in the number of breakdowns in your fleet? If this is the case, diesel bug could be to blame. Contaminated gasoline is the cause of 8 out of every 10 diesel engine failures.

How do you prevent diesel bugs?

Good housekeeping is the key to minimizing the spread of the diesel bug and maintaining high-quality fuel in your tanks. Cleaning and upkeep, on the other hand, might be an expensive and inconvenient answer. To keep your fuel in usable condition, your fuel storage tank should have a filtration system fitted and of the greatest quality available.

While all forms of fuel can degrade over time, diesel is particularly susceptible to these problems when it combines with oxygen in the air.

The majority of the water in the gasoline tank is caused by condensation, which is caused by a mixture of heat and water in a low-quality fuel storage tank.

To prevent contamination, your fuel storage system should be as airtight as possible; however, there are various other steps you may take to extend the life of your gasoline:

  • Make sure your fuel isn’t in contact with zinc, copper, or metal alloys that could react with it.
  • Ensure that gasoline is exchanged on a regular basis. If gasoline is allowed to stagnate, fuel bug colonies will proliferate; if fuel is constantly moving, they will not have the opportunity to grow.

How much is diesel bug treatment?

Diesel Bug Treatment does exactly what it says on the tin. Marine 16 diesel bug fuel treatment is a biocide combination designed to prevent or eliminate the fuel deterioration organisms collectively known as diesel bug. In 2000 litres of fuel, a 100ml bottle is enough to prevent the formation of diesel bugs. Addition rates of 100ml to 100 litres may be required for significant contamination. Marine 16 has rarely had to clear out a tank in the 15 years they’ve been selling the solution, but for serious contamination, multiple doses may be required to break up and eliminate the biological sludge that accumulates. At both high and low temperatures, the Marine 16 diesel bug fuel treatment disperses into both the water and fuel phases in your tank and remains active for over a year. Marine 16 Diesel Bug Treatment is the preferred fuel treatment of the RNLI, Royal Marines, Sea Start, and River Canal Rescue, as well as being rated #1 by Practical Boat Owner magazine.

How do you test a diesel bug?

Press the Diesel Bug dipslide onto the surface to test it. To add further pressure, place a finger on the bottom of the slide (on the plastic, not the agar). Immerse the Diesel Bug dipslide in the fluid for 10 seconds before removing it and allowing it to drain for a few seconds.

How does diesel get contaminated?

Sludge builds up in storage tanks because diesel fuel produces heavy polymers that fall out and gather at the bottom of the tank, resulting in sludge buildup.

This is an issue because, for starters, sludge like this contains energy that isn’t used when the fuel is burned. Second, if sludge is absorbed by another piece of equipment, it might clog filters and contribute to engine deposits.

Organic pollutants in ultra-low sulfur diesel can harm elastomer fuel filter seals, reducing their life. The organic pollutants in this case are the product of free radical reactions in diesel fuel. Due to the removal of naturally occurring antioxidants during the sulfur removal hydrotreating process, these processes are enhanced in ultra low sulfur fuel. A huge number of peroxide molecules are produced as a result. These peroxides cause elastomer seals in fuel systems to deteriorate by promoting oxidation and polymerization processes.

Particles in Fuel

Not only are today’s fuels prone to solidification in storage due to their intrinsic instability, but they can also be contaminated by particles from other sources. Road dust, engine rust, wear particles, or any other hard particles can be found in fuel. Particle pollution enters diesel fuel in a variety of ways. Even from one gas pump to the next, particulates might be picked up by the fuel. Particles can also enter the tank through the vent. Ambient air is sucked into the gasoline tank when it is drained, providing a source of particle pollution. Another source is wear debris from fuel system components.

Particle pollution enters diesel fuel in a variety of ways. Even from one gas pump to the next, particulates might be picked up by the fuel. Particles can also enter the tank through the vent. Ambient air is sucked into the gasoline tank when it is drained, providing a source of particle pollution.

Fuel cleanliness levels have traditionally been ISO rated as 22/21/18, which means a particle count of 20,000–40,000 per ml for particles of 4 microns or larger, 10,000–20,000 per ml for particles of 6 microns or larger, and 1,300–2,500 per ml for particles of 14 microns or larger. However, today’s diesel fuel pump manufacturers need ISO cleanliness counts of 13/9/6 or higher at the injector. Between the time the fuel leaves the fuel pump and the time it reaches the injector system, this difference represents a 1000-fold reduction in contamination. Particles smaller than 4 microns are now a potential wear factor to critical components.

Preventing Diesel Fuel Contamination

Because of the storage issues that ultra-low sulfur diesel fuels face, it is more vital than ever for businesses, emergency backup generators, and fuel storage facilities to think about preventive maintenance for their fuels. They can’t risk their diesel fuel not functioning exactly how they need it, when they need it, because today’s diesel fuels have enough issues.

What will happen to diesel engine if the fuel being used is contaminated?

Many people have experienced or know someone who has experienced a circumstance when the “The “check engine” light in their vehicle appears out of nowhere. They slow down their driving at first, nervous, to check whether they can detect any differences in the vehicle’s performance.

It doesn’t feel any different than before, so they convince themselves it’s nothing more than the car or truck being a little sluggish “picky.”

A few days pass, followed by a few months. The light is still on, and while the vehicle doesn’t appear to be operating any differently, it’s running as frequently and as hard as usual.

However, components under the hood are not performing as intended, and the continued operation of worn parts is causing damage to the systems that keep the car functioning.

At this point, catastrophic engine failure might occur in a matter of weeks, turning a couple hundred dollar fix into a thousand-dollar one.

Clogged Fuel Filters

Fuel filters that are frequently blocked are one of the first symptoms of suspected diesel fuel pollution. The filter’s purpose is to catch particles in your gasoline before they enter the engine. These particles can be clumps of sludge, metallic particles, or other undesired particulates.

If a fuel system’s fuel filter replacements are occurring in an unusually high frequency, the issue could be due to the quality of the fuel being provided to the filter.

Particulates and other undesirable contaminants would be continually present in heavily contaminated fuel, clogging filters quickly and perhaps causing additional problems in the fuel system.

This contamination could be caused by the gasoline source or the internal corrosion of the fuel tank that is being used to feed the engine.

Failing Fuel Pump

Fuel pump failure is often the result of repeated fuel filter clogging. The fuel pump may be working harder than necessary to distribute fuel from the tank to the engine due to the restriction imposed by clogged filters.

When a fuel pump fails, it is unable to supply a consistent flow of fuel, causing the engine’s mechanical stroke and operation to be disrupted. This is especially obvious during acceleration, when the gasoline demand rises yet the fuel pump is unable to supply the desired amount of fuel.

When a gasoline pump fails, it’s past the point where routine maintenance can get the engine up and running again. When a fuel pump malfunctions, the fuel line pressure is lost, and the engine is unable to receive any gasoline. At this stage, equipment downtime for substantial repairs is expected to have the fuel flowing correctly again.

Partial Injector Failure

Unfortunately, partial engine failure sometimes goes unrecognized until it is far too late.

Engine inefficiencies are rarely noticed by the user, yet they can result in significant operational and revenue losses.

The partial breakdown of an engine’s fuel injection system is a primary cause of engine inefficiency, which the majority of people are unaware of.

In many sectors, partial functional injector failure isn’t well-documented, resulting in a misunderstanding of the symptoms that accompany this type of failure.

A partial functional failure of a fuel injection system usually results in a reduction in engine efficiency or performance, even though the equipment is still operational. The following are some of the signs and symptoms of injection system failures:

Many of the symptoms listed above are difficult to identify without the right tools and equipment, which means that necessary repairs are frequently neglected.

The user is exposed to the danger of catastrophic engine or component failure if the equipment is operated continuously.

To comprehend the mechanical purpose of fuel injection in an engine, one must first comprehend the stroke cycle, as shown below.

Fuel is fed into the cylinder and ignites during the power stroke, generating the energy needed to transfer to the mechanical output that drives the vehicle or equipment.

Diesel fuel injectors are developed with certain functional tolerances before being manufactured. The fuel spray trajectory within the combustion chamber is dramatically impacted if these injectors begin to fail or deviate from the intended tolerances in any manner.

By introducing tainted gasoline into injectors, they can diverge from their limits. Contaminated gasoline can corrode and damage the metal surfaces in injectors, which is more likely after lengthy periods of use.

Any of these situations can cause a fuel injector’s engineered functionality to be altered, resulting in a cascade of internal engine damage that could finally lead to major engine failure.

Catastrophic Engine Injector Failure

When catastrophic engine injector failures occur, the engine is unable to continue operating as a result of these unexpected events. Typically, these traumatic occurrences may only be resurrected through expensive repairs, which typically result in extended equipment downtime.

To preserve sales margins and corporate profitability, operations and equipment managers rely on adequate equipment functionality. For these reasons, emphasis should be placed on managing, forecasting, and preventing equipment failures through effective equipment maintenance and operation.

Equipment specialists and OEMs often run their machines in accordance with approved maintenance practices, which are intended to reduce component failure and extend the life of the machine.

OEMs frequently advocate certain maintenance methods in order to maintain warranties. Fuel injector replacements are an important part of these OEM warranties, with recommendations coming at the half-life of the engine.

This is advised because OEMs are aware that most engines are not supplied with high-quality fuel, but rather with contaminated gasoline, which can harm injectors over time and threaten reliability.

Although maintenance workers are in charge of maintaining engine equipment and resolving any problems, not all can be predicted or avoided. This is frequently the case with polluted fuel, as operations managers’ fuel procurement options are often limited.

The use of tainted gasoline is likely to cause erosion of the injector valve seat, resulting in a partial functional failure that will eventually lead to the fuel injector valve failing completely.

The Failure Chain Reaction

There are three primary components within a high-pressure common rail fuel injector that are the most impacted by the impacts of diesel fuel pollution. These are the following:

Fuel Injector Nozzle

Fuel injector nozzles pour a fine mist of fuel into the cylinder to aid piston compression and combustion. The SAC (area surrounding pintel tip) nozzle and the VCO (valve-covered orifice) nozzle are the two most common types of gasoline nozzles.

The VCO type is commonly used in high-pressure common-rail (HPCR) injectors. As the injection is completed, the injector can rapidly and completely shut off the fuel supply. This enables for more precise fuel injection management, which is crucial in HPCR injectors.

This design allows the injector to quickly and totally shut off the gasoline at the end of an injection event, allowing for more stringent fuel injection management. The two designs can be seen in the gallery below.

VCO injection needle valves are noted for their exceptionally tight tolerances and sensitivity to partial failure during rise and fall operations.

In a diesel engine, the rise and fall injection actions might happen dozens of times per second. As a result, injector tolerances are vital for maintaining dependable operation and avoiding fuel injection function partial failures.

Fuel injector nozzle holes are often vulnerable to two situations that can cause injector failure. Blockages and erosions are the two conditions.

Although amazing, the accuracy required to operate HPCR fuel injectors results in delicate components that require certain conditions for combustion to occur as intended.

When everything goes according to plan, the fuel mist sprayed into the combustion chamber is burned away before the fuel droplets reach the engine cylinder liner. This guarantees that the fuel combustion does not cause damage to the cylinder, which is especially important for fuel injection systems to work properly.

Soot builds up within the engine when fuel fails to complete combustion as it should, resulting in damaging exhaust pollutants such as Nitrogen Oxide, Carbon Monoxide, and Particulate Matter.

HPCR fuel injectors typically have 5-8 holes cut into the injector tip that allow fuel to be injected into the combustion chamber and atomized.

Diesel fuel is sprayed into the combustion chamber when the fuel injection action takes place. The piston moves downward during the power stroke, pulling injector fuel spray deeper into the combustion chamber.

Fuel droplets from the injector nozzle may not be able to complete combustion if injector tolerances are compromised, resulting in smoke and soot emissions. Soot will build up on the injector tips if the problem is not handled, eventually causing blockages. The engine valves, cylinder walls, and exhaust system are all susceptible to obstructions.

Because more fuel is forced to depart the injector through the remaining unobstructed holes when injector nozzle holes are blocked by this build-up, fuel velocity through the open nozzle holes increases.

Ineffective atomization is caused by blockages in the injector nozzle, which contributes to engine inefficiency and hazardous emissions.

When partial injector functional failures occur, it is thought to be best practice to employ diesel fuel additives that are chemically engineered to clear soot build-up from the injectors.

Although the use of these additives can be beneficial, they do not address the fundamental underlying issues that cause injector clogs. Injectors will still wear out if the gasoline is contaminated, and the fuel additive remedy may merely be a bandage for a more serious problem.

Fuel Injector Needle & Control Valve

In modern engines, there are two types of fuel injectors: electronically controlled unit injectors (EUI) and high-pressure common rail injectors (HPCR). After the fuel injection process, the needle valve in both of these fuel injection types is designed to stop the fuel from going through the injector tip.

Fuel will dribble down into the engine cylinder and onto the piston if a needle valve fails to seal properly (s). This oozing fuel has the potential to cause serious engine issues and catastrophic breakdowns.

The fuel injectors in HPCR injection systems are constantly under sustained pressure while the engine is running. As a result, if a fuel injector’s needle valve malfunctions, there is a greater risk of injury.

The timing of fuel injection sequences is managed by a control valve in both types of electronic fuel injectors.

An electronic solenoid controls the control valves in EUI injectors. A Piezoelectrically operated valve controls HPCR injectors. These Piezoelectric valves are frequently regarded as the most important injector component because they allow the injection system to better manage the distance and speed of valve movement.

Fuel contamination is extremely harmful to Piezoelectric valves because it wears out and destroys the components, compromising the injection tolerances.

Contaminants can build up inside the injector after prolonged exposure to tainted gasoline, causing the needle valve to move slowly. This wears down the valve and eventually causes the needle component within the fuel injector to fail partially, if not completely.

Can you store diesel in a plastic water tank?

Despite the short storage time and the possibility of polyethylene plastic material degradation, there are a number of advantages to storing diesel fuel in a plastic oil drum.

When diesel fuel comes into touch with certain metal alloys, such as zinc or copper, it degrades quickly. While metal barrels can be used to store diesel, you must ensure that the metal does not react with the fuel. You won’t have to worry about this with a plastic drum.

Rust is a problem with many metal barrels and storage containers. Rusting can also influence the quality of diesel and cause it to degrade in storage. Because plastic drums do not rust, there is no need to be concerned about this.

There are a number of other reasons why plastic drums are a popular choice for storing diesel fuel in addition to these advantages over metal containers:

Industrially, plastic drums can be stored and transported (using forklifts etc.)

How do you prevent bacterial growth in diesel fuel?

The best strategy to avoid microbial growth in diesel fuel is to reduce its exposure to water. This can be accomplished through a variety of methods, including the recycling of fuel through water separations and the routine discharge of water bottoms where bacteria thrive. It’s also possible to employ gasoline tank insulation, which is a method of regulating fuel temperature.

If sludge has already formed, it should be removed as soon as possible and on a regular basis to prevent it from spreading. It’s also a good idea to schedule frequent tank inspections, cleaning, and treatments. When it comes to treatment, the EPA recommends using prophylactic doses of diesel fuel biocides. These compounds have the ability to extend the period between tank cleanings.