Diesel Exhaust & Emissions System Repair

DPF, EGR & DEF Diagnostics and Repairs

Modern diesel engines are powerful and efficient—but they rely on complex exhaust and emissions systems to keep them running clean. When these systems fail, you may see warning lights, limp mode, or excessive smoke. At Rob’s Automotive Repair Center in Clackamas, OR, we provide complete diesel exhaust and emissions repair, including DPF cleaning, EGR service, and DEF system diagnostics. If you’re searching for diesel exhaust repair near me, we’re your trusted local solution.

Why Diesel Emissions Systems Matter

Your truck or car’s exhaust system does more than quiet the engine. It controls soot and emissions through:

• DPF (Diesel Particulate Filter) – traps soot and requires regeneration
• EGR (Exhaust Gas Recirculation) – lowers combustion temps to reduce NOx
• SCR/DEF Systems – injects diesel exhaust fluid to neutralize pollutants
• NOx & differential pressure sensors – monitor performance and efficiency

When these parts clog, fail, or break down, performance and fuel economy drop—and repairs can’t wait.

Diesel Particulate Filter (DPF) Service

A clogged or failing DPF can cause:

• Reduced power or limp mode
• Frequent regenerations or failed regen cycles
• Check engine lights for emissions codes

We offer:

• DPF cleaning to restore flow and function
• Sensor testing and replacement
• DPF replacement when filters are beyond repair

Our goal is to restore proper operation and prevent costly damage.

EGR System Repairs

The EGR system is prone to carbon buildup. Common issues include:

• Rough idle or stalling
• Excessive black smoke
• Poor fuel efficiency

We provide:

• EGR valve cleaning or replacement
• EGR cooler repairs
• Intake cleaning to remove carbon deposits

Restoring your EGR system improves airflow, combustion, and overall performance.

DEF & SCR System Repairs

Newer diesels use DEF (Diesel Exhaust Fluid) to reduce emissions. Problems we fix include:

• DEF pump or injector failures
• Crystallized DEF clogging lines
• Faulty NOx sensors triggering warning lights

We perform DEF/SCR diagnostics and repairs to keep your diesel compliant and reliable.

Exhaust System Repairs

Not every issue is emissions-related. We also repair:

• Exhaust leaks at manifolds, flex pipes, or joints
• Turbo downpipes and mufflers
• Upgraded exhaust components (compliant with emissions requirements)

A solid exhaust system keeps your diesel quiet, safe, and efficient.

Why Choose Rob’s for Exhaust & Emissions?

• Advanced diagnostics for diesel emissions systems
• OEM-quality parts for lasting repairs
• Experienced technicians across Cummins, Power Stroke, Duramax & European diesels
• 4-year/48,000-mile nationwide warranty on qualifying repairs
• Trusted local shop serving Clackamas and the Portland metro

We don’t guess—we fix diesel emissions problems right the first time.

Serving Diesel Drivers Across Clackamas & Beyond

From work trucks to European diesels, we service exhaust and emissions systems for drivers across Clackamas, Oregon City, Happy Valley, Damascus, and Milwaukie. If you need diesel exhaust repair near me, Rob’s Automotive Repair Center is your trusted choice.

Schedule Your Diesel Exhaust Repair Today

Don’t let emissions problems keep your truck in limp mode or put your car off the road. From DPF cleaning to EGR or DEF repairs, our team gets your diesel back to full power.
Call or schedule online today for professional diesel exhaust & emissions service in Clackamas, OR.