What You Need to Know About Diesel Emissions Systems

You want to keep your diesel truck running at top form, and one aspect of the machine that can’t be neglected is the emissions systems. There are environmental concerns related to your emissions, but the efficiency with which your truck runs also has a lot to do with the health of your emissions systems.

It’s Complicated

Your diesel truck’s emissions systems are a complex network of sensors, filters and control units that regulate pollutants. But it’s not all about pollutants – the systems are also vital to engine performance.

For example, your exhaust gas recirculation, which helps to lower combustion temperatures, also improves mileage and reduces the potential for engine knock. Your diesel particulate filter ensures proper exhaust flow while your selective catalytic reduction system optimizes specific gas reduction, but not at the risk of power loss.

This only begins to address the topic, as additional components such as the diesel particulate filter (DPF), diesel exhaust fluid (DEF), and various other elements of the emissions system must also be considered.

Sticking to Standards

The EPA and other regulatory agencies establish emissions standards that must be adhered to—not only to protect the environment, but also to ensure regulatory compliance and avoid potential penalties.

Did you know that nitrogen oxide gases can lead to respiratory problems? Just as harmful are carbon monoxide and hydrocarbons, which also fall under the purview of governing bodies and are kept out of the environment by properly operating emissions systems.

So, how do these standards impact you as a diesel truck owner?

• Upgrades
  If you own an older vehicle, perhaps one that was on the road prior to regulations on certain harmful emissions, you may be due for some upgrades or retrofits. This often includes a selective catalytic reduction (SCR) system or a diesel particulate filter (DPF).
• Maintenance
  At the very least, you will be required to stay compliant via maintenance and inspection. This includes getting your exhaust system checked, your emissions tested, and your filters replaced. It might seem like a tedious task, but it’s important for the environment and a smoothly running engine.

For diesel truck owners with moderate mechanical skills, certain emissions maintenance tasks are manageable. For example, refilling the diesel exhaust fluid (DEF) tank is a relatively straightforward procedure. Removing the diesel particulate filter (DPF) is considered moderately difficult; however, it typically requires sending the component to a professional cleaning service equipped with specialized tools.

Additionally, replacing various sensors—such as the DPF pressure sensor or the exhaust gas temperature (EGT) sensor—is also feasible for individuals with intermediate mechanical expertise, though these tasks can be more technically involved.

Only Professionals

There are instances where it is important to seek professional assistance—such as on-truck DPF cleaning, exhaust gas recirculation (EGR) valve cleaning or replacement, and electronic control unit (ECU) reprogramming or tuning. These are jobs better left to the professionals, like our team at Gray Diesel and Equipment Services.

Bring your diesel truck in to our team and we’ll ensure all components of your emissions systems are ready for the road. Contact us and let’s schedule an appointment today.