Sep 08

Love3

How to Clean a Diesel Particulate Filter?

By DES Tech News DES Tech Tips, Emissions Industry Related

The diesel particulate filter is the place where soot and ash collect in your diesel emissions system. If you don’t clean your DPF regularly, it can cost you thousands of dollars in unscheduled downtime and repairs.

Why Do DPFs Need to Be Cleaned?

A DPF (diesel particulate filter) filter is designed to catch & oxidize soot (unburned fuel/lube oil) and turn it into ash. The ash is pushed to the back of the filter and stored there.

Over time it builds up and requires removal. With the cost of some new DPFs soaring to over $7000, routine maintenance is key in all aspects of the DPF. Being proactive in your service intervals will decrease downtime, service expenses and increase proper system operation and profit.

Thus, it’s important to regularly clean and maintain your filters, not only to preserve the functionality of the filter but to save on fuel and protect your engine.

OEM Regeneration

In a perfect world, DPF filters perform their regeneration cycles on the truck. But we don’t live in a perfect world. Excessive idling, cold & severe duty cycles, even a broken exhaust pipe can inhibit regeneration on the truck. History has proven regeneration alone will not deliver consistent results and regular cleaning of DPFs is required.

Also, most leading after-market manufacturers require a baking cycle in addition to de-ashing to properly clean their systems. DES takes the guesswork out of DPF cleaning and maintenance to give you consistent results, every time.

What You Need to Know About DPF Cleaning

There are two primary ways to clean a diesel particulate filter.

Thermal

The thermal cleaning process is also commonly referred to as “bake and blow” and involves baking the DPF filter in an oven which oxidizes the soot and using air to force the ash out of the filter.

Aqueous

This is a process that uses a surfactant to surround the ash particles to make it easy for water to wash the ash out of the substrate of the DPF. The DPF is then dried in a special drying cabinet and can be ready to be reinstalled in about 2-hours with the correct equipment.

How to Clean a DPF at Home?

It is not recommended to try to clean your DPF at home.

We’ve heard of stories of vehicle owners using cleaners and a pressure washer, but this will not clean the filter properly and is more likely to damage it and require the diesel particulate filter to be replaced.

How Often to Clean a DPF Filter?

The vocation you work in with your commercial truck is the most important factor in deciding when you should clean your diesel particulate filter. If you do mostly highway driving and are carrying full loads you can go much longer between cleanings than someone who does a lot of starting and stopping or working off road.

The reason for this is that regeneration of the DPF filter is more effective when the truck is operating at higher temperatures. These higher temperatures are achieved when driving at highway speeds and pulling full loads. Trucks that do more stop-and-start type work never get up to the temperatures required for a proper regeneration of the DPF.

Therefore we recommend that most trucks with diesel emissions systems get their DPFs cleaned every 75,000 to 100,000 miles or once a year whichever comes first. This prevents the ash from becoming so hardened that it is difficult to remove. If you delay this regular cleaning of the diesel particulate filter you increase the chances that a replacement diesel particulate filter will be required.

How Much Does It Cost to Clean a DPF Filter?

The average cost for just a DPF cleaning is between $250 and $400 if the vehicle owner removes the DPF filter, drops the DPF filter off and picks the DPF up at the cleaning facility, and reinstalls it on the vehicle.

If our shop completes the removal and replacement, we charge on average one hour at our shop labor rate. On average the DPF cleaning cost, including removal, and reinstalling the DPF, will be between $400 and $650.

Who Cleans DPF Filters Near Me?

Owner-operators, fleets, municipalities, and construction companies that want to have their DPF cleaned in Redding or Sacramento, California, Portland, Oregon, or Vancouver, British Columbia should contact Diesel Emissions Service.

We use our Filtertherm® DPF line of cleaning equipment which includes Aqueous (liquid) and Thermal methods, plus our rigorous 8-Step Cleaning  Process to give you consistent results, every time. Regularly maintaining your aftertreatment system and getting your DPF cleaned is part of an overall strategy that will help you to lower your total cost of operation.

To schedule a time to get your DPF cleaned phone us at 1-844-556-3150 or you can email us.

At Diesel Emissions Service our focus is mainly on serving fleets & municipalities in California, Oregon, and British Columbia, if you need comprehensive aftertreatment maintenance, DPF cleaning, retrofits, and/or repair service, contact us today.

We hope you found this article helpful. At DES, we believe in putting out educational and informative content to not only our customers but for the general industry to grow and benefit from.

To share this article, use one of the social media icons above.

DES is a recognized leader in the diesel emissions industry. We provide a wide range of services for municipalities, fleet operators, and all manner of transportation and construction businesses all across the west coast.

We’re social, follow DES on your social network of choice.

More News

Get the latest on the industry and DES.

Jun 25

Love3

What You Need to Know About the Diesel Oxidation Catalyst on a Diesel Engine

By DES Tech News DES Tech Tips, Emissions Industry Related

Since 2006, Diesel Emissions Service has been servicing commercial equipment with aftertreatment systems. There are four components of the aftertreatment system, which is also referred to as the diesel emissions system. It is important that whoever is performing maintenance and repairs on your aftertreatment system understands how the four components of the system work. Over the years we have received several questions specifically about the DOC that we wanted to answer in this article.

What Does the DOC Stand for in Diesel Engines?

The DOC in a diesel engine stands for Diesel Oxidation Catalyst.

Understanding the Diesel Oxidation Catalyst (DOC)

The DOC is designed to convert carbon monoxide and hydrocarbons into carbon dioxide and water. It essentially breaks down pollutants in the exhaust system from a diesel engine which helps reduce particulate matter.

How it works:

The exhaust flows straight through the DOC substrate with very little restriction. In the aftertreatment system, there is a hydrocarbon dosing system where fuel is dosed at a specific temperature; the fuel turns into a vapor and that vapor starts the chemical reaction which produces heat. The ECM has a thermal management system where it maintains that heat and this process allows the diesel particulate filter to operate at peak performance.

Can the DOC be Cleaned like a Diesel Particulate Filter (DPF)?

Yes, anytime the DPF is removed for cleaning, the DOC should be removed, inspected, and cleaned as well. It is recommended to follow the same cleaning method as the DPF. When technicians see a DPF fault code many times they will focus on cleaning the DPF but leave the DOC in place. This is a mistake because the DOC is a flow-through device. Therefore, what is in the filter has passed through the DOC and it should be cleaned as well. If the DOC is not clear, it can become face plugged and this is part of a bigger problem that needs to be diagnosed.

Why Does a DOC Fail?

DOCs are coated with precious metals and over time these deteriorate causing the DOC to fail. The DOC has no moving parts, resulting in it having a long lifecycle. Therefore 80% of DOC and DPF failures are premature due to engine-related issues.

The DOC has one job, which is to create heat for soot oxidation, but if the engine is not running properly because of bad injectors or a turbo issue, or the aftertreatment system is not operating properly due to exhaust leaks or a leaking hydrocarbon doser, the DOC will fail prematurely. We will see DOC contamination which in turn could poison the DOC and cause DOC face plugging.

What is DOC Face Plugging?

Face plugging is an extreme buildup of carbon on the inlet side of your DOC. This extreme buildup causes additional exhaust backpressure and restricts exhaust flow, which hinders the performance of the DPF and SCR downstream.

The Key to Aftertreatment System Maintenance

Regardless of what component of the aftertreatment system you are working on, the most important thing you need to remember about aftertreatment system maintenance is this:

“Upstream problems in the system are often the cause of downstream failures.”

It is so important to look at the entire aftertreatment system when diagnosing problems, but beyond that, it is equally important to look at the other engine systems as well.

At Diesel Emissions Service our focus is mainly on fleets in California, Oregon, and British Columbia, if you require a comprehensive aftertreatment maintenance, DPF cleaning, and repair service, contact us today.

We hope you found this article helpful. At DES, we believe in putting out educational and informative content to not only our customers but for the general industry to grow and benefit from.

To share this article, use one of the social media icons above.

DES is a recognized leader in the diesel emissions industry. We provide a wide range of services for municipalities, fleet operators, and all manner of transportation and construction businesses all across the west coast.

We’re social, follow DES on your social network of choice.

More News

Get the latest on the industry and DES.

Jun 02

Love3

The Key to Maintaining the EGR on a Diesel Engine

By DES Tech News DES Tech Tips, Emissions Industry Related

The most common mistake diesel technicians make when diagnosing problems and performing repairs on the aftertreatment system is to only look at one part of the system instead of the entire system. Upstream problems are often the cause of downstream failures.

It is important that whoever is performing maintenance and repairs on your aftertreatment system understands how the four components of the system work. They need to know what they are and the function that they perform. This basic information provides the foundation for the maintenance program and diagnostic and repair criteria that keep fleets from experiencing rising costs and unscheduled downtime caused by premature aftertreatment failures.

At Diesel Emissions Service, we have specialized in maintenance and repairs on aftertreatment systems since 2006 and we have seen firsthand the negative impact on fleets when the aftertreatment system is mismanaged. In this article, we are going to focus on the EGR system.

Understanding the Exhaust Gas Recirculation (EGR)

How it works:

Engine manufacturers know that if they can lower cylinder temperature during the combustion process, they will lower the amount of NOx created. The EGR removes a portion of the oxygen and replaces it with an inert gas. Those inert gases lower the cylinder temperatures. The EGR cooler (or coolers depending on which engine we’re talking about) lowers exhaust temperature before it’s reintroduced into the intake manifold.

The Symptoms of EGR Failure and What to Do About It

The most common issues are rough idle, increased fuel consumption, and excessive fuel knock. The problem is that these symptoms can also be indications of other problems unrelated to the EGR. An experienced diesel technician will perform several diagnostic checks to identify if the EGR is the cause.

Recommended EGR Maintenance Procedures

OEMs don’t offer EGR maintenance procedures, but there are machines available to the independent service channel that have been specifically designed to help in this area.

In the diesel industry, it is well known the EGR system loads the intake tract, injectors, EGR cooler, and the turbo with carbon, which interferes with the engine’s ability to maintain the air-fuel ratio.

We use a special machine to remove this carbon build-up by running a solution through the engine while the EGR is commanded in the open position to make sure every aspect of the engine receives the decarbonizing solution. We recommend that this is done during the yearly DPF service while the truck is out of service. It is a 1-hour process and requires an oil change.

Repair Procedures for the EGR

Because failure of the EGR is usually related to a carbon build-up, cleaning the EGR system and the other engine components affected by the carbon build-up is the first step. But there are times when replacing the EGR and related parts is the most cost-effective option. Repair procedures are manufacturer-specific. But generally, the procedure is relatively straightforward and is similar from one engine to another.

If you require a more comprehensive aftertreatment maintenance and repair service, contact us today.

We hope you found this article helpful. At DES, we believe in putting out educational and informative content to not only our customers but for the general industry to grow and benefit from.

To share this article, use one of the social media icons above.

DES is a recognized leader in the diesel emissions industry. We provide a wide range of services for municipalities, fleet operators, and all manner of transportation and construction businesses all across the west coast.

We’re social, follow DES on your social network of choice.

More News

Get the latest on the industry and DES.

Apr 28

Love3

Everything You Need to Know About Aftertreatment Maintenance

By DES Tech News DES Tech Tips, Emissions Industry Related

Fleets of commercial trucks and owner-operators have been struggling to maintain and repair aftertreatment systems for over 15-years. It has been a source of frustration and a financial burden.

At Diesel Emissions Service we have been providing aftertreatment maintenance and repairs since 2006 and in that time our technicians have observed two main factors that are driving the problems with aftertreatment we see today.

Factor 1: A Lack of Accurate Information and Support

Having accurate information about how and when diesel emissions systems require maintenance and repairs is the key to avoiding many of the problems that fleets experience. However, that is what has been missing since the very beginning.

Insufficient Training

The independent service channel has not received adequate training from the very beginning. When diesel mechanics had to diagnose and repair pre-emissions vehicles, they knew how to troubleshoot known smoke issues.

With the 2007 and newer vehicles, these mechanics had to become technicians and really learn and understand the new technology to be able to diagnose the systems. As far as the DPF or aftertreatment goes, in 2007, fleets were kind of thrown into a tailspin with downtime and costs attributed to the aftertreatment system and they never were able to figure it out.

A Lack of Support

Part of the reason for this is the OE service channel has purposely made the information unavailable. They really don’t want the independent service channel to do the work, they want the vehicle brought back to the dealer.

The fleets had a belief that the OEM or the vehicle make that they had purchased, would keep them in the loop for training and would let them know what their service intervals should be. In 2007, almost every truck manufacturer and engine manufacturer basically said, “Look, the aftertreatment systems are going to last 500,000 to 600,000 miles. Don’t worry about them.” This wasn’t the case and it turned out to be a lot more complicated and expensive than anyone could have imagined.

Factor 2: Understanding the Aftertreatment System

There are four components to the aftertreatment system, and it is important to understand what they are and the function that they perform. This basic information provides the foundation for the maintenance system and diagnostic and repair criteria that keep fleets from experiencing rising costs and unscheduled downtime caused by premature aftertreatment failures.

Exhaust Gas Recirculation (EGR)

The ERG is an emission control technology that reduces NOx emissions from most diesel engines.

How it works:

Engine manufacturers know that if they can lower cylinder temperature during the combustion process, they will lower the amount of NOx created. The EGR removes a portion of the oxygen and replaces it with an inert gas. Those inert gases lower the cylinder temperatures. The EGR cooler (or coolers depending on which engine we’re talking about) lowers exhaust temperature before it’s reintroduced into the intake manifold.

Diesel Oxidation Catalyst (DOC)

The DOC is designed to convert carbon monoxide and hydrocarbons into carbon dioxide and water. It essentially breaks down pollutants in the exhaust system from a diesel engine which helps reduce particulate matter.

How it works:

The exhaust flows straight through the DOC substrate with very little restriction. In the aftertreatment system, there is a hydrocarbon dosing system where fuel is dosed at a specific temperature; the fuel turns into a vapor and that vapor starts the chemical reaction which produces heat. The ECM has a thermal management system where it maintains that heat and this process is all for the DPF.

Diesel Particulate Filter (DPF)

The DPF is an exhaust device that traps particulate matter such as soot and ash.

How it works:

Unlike the DOC, which is designed to be flow-through, the DPF is a wall-flow which means the exhaust flows into the filter through pores, and the soot and ash collect on the walls of the filter. The DPF has two jobs, catch soot and store ash.

Selective Catalytic Reduction (SCR)

The SCR is an advanced active emissions control technology system that injects a liquid-reductant agent through a special catalyst into the exhaust stream of a diesel engine. The reductant source is usually Diesel Exhaust Fluid (DEF).

How it works:

The SCR is also a NOx reduction technology, and its job is to lower engine outlet NOx to as close to zero as possible. The SCR is a flow-through technology a lot like the DOC. It injects diesel exhaust fluid which is 67.5% water and 32.5% urea and when the water evaporates, the remaining urea converts to ammonia and the ammonia reacts with the NOx and coverts it into nitrogen and water.

These four parts of the aftertreatment system work together and have allowed truck and engine manufacturers to meet the Environmental Protection Agency mandates. There are even more regulations and further reductions in how much NOx diesel engines will be permitted to emit in 2027. Therefore, the systems are here to stay.

The Key to Aftertreatment System Maintenance

One of the most common mistakes fleets make is failing to service the aftertreatment systems often enough. DPFs require regular cleaning, and the rest of the system requires regular inspections. Upstream leaks in the system are often the cause of downstream failures.

The most common mistake diesel technicians make when diagnosing problems and performing repairs is to look at one part of the system instead of the four parts that make up the complete system. For example, the DPF is often blamed as the source of the problem when it is the symptom of a problem elsewhere in the system.

For a more detailed explanation of the most common problems with the aftertreatment system, we encourage you to listen to Steve Hoke and Steve “Junior” Stratton on the HDT Talks Trucking podcast.

If you require a more comprehensive aftertreatment maintenance and repair service, why not contact us today.

We hope you found this article helpful. At DES, we believe in putting out educational and informative content to not only our customers but for the general industry to grow and benefit from.

To share this article, use one of the social media icons above.

DES is a recognized leader in the diesel emissions industry. We provide a wide range of services for municipalities, fleet operators, and all manner of transportation and construction businesses all across the west coast.

We’re social, follow DES on your social network of choice.

More News

Get the latest on the industry and DES.

Jan 02

Love2

DEF Doser issue causes truck to “de-rate”

By DES Tech News DES Tech Tips

Recently one of our diesel repair techs came across some bizarre looking formations on a customer’s aftertreatment emissions system – specifically around the DEF Doser.

This mess around the DEF Doser indicates a major problem with the SCR section of the aftertreatment system and caused the truck to “de-rate” itself.

What does “de-rate” mean? You probably already know, but for those that don’t…

In a de-rate condition, the ECM (Engine Control Module) limits the horsepower and/or speed of the truck, sometimes to as slow as 5 mph. The ECM is hard-coded to do this when it detects certain problems with the engine such as low coolant, low oil pressure, etc and especially any fault codes related to the emissions system. This is to protect the engine as well as prevent unwanted emissions.

It’s recommended that the driver get the vehicle serviced immediately. Driving with a de-rate may cause permanent damage to your engine or emission system. Be cautious when driving with an active de-rate and get into a service shop as soon as you can to figure out what the issue is.

In this case, it was obvious the DEF Doser was not functioning as it should. That white powder is DEF that was found its way out of what is designed to be a closed system.

With DEF (diesel exhaust fluid) leaking out in places it shouldn’t, the DEF was not being injected properly. DEF fluid converts to ammonia which reacts with the NOx gases turning them into harmless nitrogen and water. That reaction is constantly monitored by the inlet and outlet NOx Sensors.

What’s the point of all this? It illustrates the importance of regular, scheduled maintenance for your fleet/truck’s emissions aftertreatment system. All components should be inspected and any codes investigated. Even a failure of a small, relatively inexpensive part (in this case a DEF Doser) can lead to costly and frustrating downtime. A great time to do this is when a DPF is being cleaned.

At DES we not only clean your DPFs, we have trained diesel techs who can inspect and diagnose your truck’s aftertreatment system for issues.

We recommend whoever you have service your diesel emissions components that they regularly and proactively take into account the complete aftertreatment system. In the long run, it’s well worth it.

We hope you found this DES Tech Tip helpful. At DES believe in putting out educational and informative content to not only our customers, but for the general industry to grow and benefit from.

To share this article use one of the social media icons above.

DES is a recognized leader in the diesel emissions industry. We provide a wide range of services for municipalities, fleet operators, and all manner of transportation and construction businesses all across the west coast.

We’re social, follow DES on your social network of choice.

More News

Get the latest on the industry and DES.

DES Tech Tips

How to Clean a Diesel Particulate Filter?

The diesel particulate filter is the place where soot and ash collect in your diesel emissions system. If you don’t clean your DPF regularly, it can cost you thousands of dollars in unscheduled downtime and repairs.

Why Do DPFs Need to Be Cleaned?

A DPF (diesel particulate filter) filter is designed to catch & oxidize soot (unburned fuel/lube oil) and turn it into ash. The ash is pushed to the back of the filter and stored there.

Over time it builds up and requires removal. With the cost of some new DPFs soaring to over $7000, routine maintenance is key in all aspects of the DPF. Being proactive in your service intervals will decrease downtime, service expenses and increase proper system operation and profit.

Thus, it’s important to regularly clean and maintain your filters, not only to preserve the functionality of the filter but to save on fuel and protect your engine.

OEM Regeneration

Also, most leading after-market manufacturers require a baking cycle in addition to de-ashing to properly clean their systems. DES takes the guesswork out of DPF cleaning and maintenance to give you consistent results, every time.

What You Need to Know About DPF Cleaning

There are two primary ways to clean a diesel particulate filter.

Thermal

The thermal cleaning process is also commonly referred to as “bake and blow” and involves baking the DPF filter in an oven which oxidizes the soot and using air to force the ash out of the filter.

Aqueous

This is a process that uses a surfactant to surround the ash particles to make it easy for water to wash the ash out of the substrate of the DPF. The DPF is then dried in a special drying cabinet and can be ready to be reinstalled in about 2-hours with the correct equipment.

How to Clean a DPF at Home?

It is not recommended to try to clean your DPF at home.

We’ve heard of stories of vehicle owners using cleaners and a pressure washer, but this will not clean the filter properly and is more likely to damage it and require the diesel particulate filter to be replaced.

How Often to Clean a DPF Filter?

How Much Does It Cost to Clean a DPF Filter?

The average cost for just a DPF cleaning is between $250 and $400 if the vehicle owner removes the DPF filter, drops the DPF filter off and picks the DPF up at the cleaning facility, and reinstalls it on the vehicle.

If our shop completes the removal and replacement, we charge on average one hour at our shop labor rate. On average the DPF cleaning cost, including removal, and reinstalling the DPF, will be between $400 and $650.

Who Cleans DPF Filters Near Me?

Owner-operators, fleets, municipalities, and construction companies that want to have their DPF cleaned in Redding or Sacramento, California, Portland, Oregon, or Vancouver, British Columbia should contact Diesel Emissions Service.

To schedule a time to get your DPF cleaned phone us at 1-844-556-3150 or you can email us.

At Diesel Emissions Service our focus is mainly on serving fleets & municipalities in California, Oregon, and British Columbia, if you need comprehensive aftertreatment maintenance, DPF cleaning, retrofits, and/or repair service, contact us today.

We hope you found this article helpful. At DES, we believe in putting out educational and informative content to not only our customers but for the general industry to grow and benefit from.

To share this article, use one of the social media icons above.

DES is a recognized leader in the diesel emissions industry. We provide a wide range of services for municipalities, fleet operators, and all manner of transportation and construction businesses all across the west coast.

We’re social, follow DES on your social network of choice.

More News

What you need to know about the Clean Air Construction Program

Breaking Down Oregon’s Diesel Retrofit Compliance Program

Oregon’s One-Time Fleet Reporting Requirement

What You Need to Know About the Diesel Oxidation Catalyst on a Diesel Engine

What Does the DOC Stand for in Diesel Engines?

The DOC in a diesel engine stands for Diesel Oxidation Catalyst.

Understanding the Diesel Oxidation Catalyst (DOC)

The DOC is designed to convert carbon monoxide and hydrocarbons into carbon dioxide and water. It essentially breaks down pollutants in the exhaust system from a diesel engine which helps reduce particulate matter.

How it works:

Can the DOC be Cleaned like a Diesel Particulate Filter (DPF)?

Why Does a DOC Fail?

DOCs are coated with precious metals and over time these deteriorate causing the DOC to fail. The DOC has no moving parts, resulting in it having a long lifecycle. Therefore 80% of DOC and DPF failures are premature due to engine-related issues.

What is DOC Face Plugging?

Face plugging is an extreme buildup of carbon on the inlet side of your DOC. This extreme buildup causes additional exhaust backpressure and restricts exhaust flow, which hinders the performance of the DPF and SCR downstream.

The Key to Aftertreatment System Maintenance

Regardless of what component of the aftertreatment system you are working on, the most important thing you need to remember about aftertreatment system maintenance is this:

“Upstream problems in the system are often the cause of downstream failures.”

It is so important to look at the entire aftertreatment system when diagnosing problems, but beyond that, it is equally important to look at the other engine systems as well.

At Diesel Emissions Service our focus is mainly on fleets in California, Oregon, and British Columbia, if you require a comprehensive aftertreatment maintenance, DPF cleaning, and repair service, contact us today.

We hope you found this article helpful. At DES, we believe in putting out educational and informative content to not only our customers but for the general industry to grow and benefit from.

To share this article, use one of the social media icons above.

DES is a recognized leader in the diesel emissions industry. We provide a wide range of services for municipalities, fleet operators, and all manner of transportation and construction businesses all across the west coast.

We’re social, follow DES on your social network of choice.

More News

What you need to know about the Clean Air Construction Program

Breaking Down Oregon’s Diesel Retrofit Compliance Program

Oregon’s One-Time Fleet Reporting Requirement

The Key to Maintaining the EGR on a Diesel Engine

The most common mistake diesel technicians make when diagnosing problems and performing repairs on the aftertreatment system is to only look at one part of the system instead of the entire system. Upstream problems are often the cause of downstream failures.

At Diesel Emissions Service, we have specialized in maintenance and repairs on aftertreatment systems since 2006 and we have seen firsthand the negative impact on fleets when the aftertreatment system is mismanaged. In this article, we are going to focus on the EGR system.

Understanding the Exhaust Gas Recirculation (EGR)

How it works:

The Symptoms of EGR Failure and What to Do About It

Recommended EGR Maintenance Procedures

OEMs don’t offer EGR maintenance procedures, but there are machines available to the independent service channel that have been specifically designed to help in this area.

In the diesel industry, it is well known the EGR system loads the intake tract, injectors, EGR cooler, and the turbo with carbon, which interferes with the engine’s ability to maintain the air-fuel ratio.

Repair Procedures for the EGR

If you require a more comprehensive aftertreatment maintenance and repair service, contact us today.

We hope you found this article helpful. At DES, we believe in putting out educational and informative content to not only our customers but for the general industry to grow and benefit from.

To share this article, use one of the social media icons above.

DES is a recognized leader in the diesel emissions industry. We provide a wide range of services for municipalities, fleet operators, and all manner of transportation and construction businesses all across the west coast.

We’re social, follow DES on your social network of choice.

More News

What You Need to Know About Oregon’s Diesel Emissions Mitigation Grant Program

What you need to know about the Clean Air Construction Program

Breaking Down Oregon’s Diesel Retrofit Compliance Program

Everything You Need to Know About Aftertreatment Maintenance

Fleets of commercial trucks and owner-operators have been struggling to maintain and repair aftertreatment systems for over 15-years. It has been a source of frustration and a financial burden.

At Diesel Emissions Service we have been providing aftertreatment maintenance and repairs since 2006 and in that time our technicians have observed two main factors that are driving the problems with aftertreatment we see today.

A DPF (diesel particulate filter) filter is designed to catch & oxidize soot (unburned fuel/lube oil) and turn it into ash. The ash is pushed to the back of the filter and stored there.

Also, most leading after-market manufacturers require a baking cycle in addition to de-ashing to properly clean their systems. DES takes the guesswork out of DPF cleaning and maintenance to give you consistent results, every time.

Face plugging is an extreme buildup of carbon on the inlet side of your DOC. This extreme buildup causes additional exhaust backpressure and restricts exhaust flow, which hinders the performance of the DPF and SCR downstream.