Diesel Service

Trusted Diesel Expertise for All Makes and Models

Our shop is equipped with state-of-the-art diagnostic tools designed specifically for diesel systems. We handle everything from emissions and fuel system repair to full engine overhauls and fleet maintenance. Since 2004, Rob’s Automotive Repair has been Clackamas County’s trusted choice for diesel repair, maintenance, and fleet management.

We service all major diesel platforms:

  • Ford Power Stroke Engines – Precision repairs and performance tuning for 6.0L, 6.4L, 6.7L, and 7.3L engines
  • Chevrolet & GMC Duramax Engines – Comprehensive maintenance, injector replacement, and DEF system service
  • Dodge RAM Cummins Engines – From fuel system service to full engine rebuilds
  • Isuzu, Hino, and Sprinter Diesel Engines – Medium-duty and commercial vehicle specialists
  • Fleet Diesel Vehicles – Multi-vehicle maintenance programs designed for uptime and efficiency

Complete Diesel Maintenance and Repair Services

Diesel engines demand attention to detail. That’s why our diesel services are tailored to maximize performance, reliability, and longevity for both individual drivers and business fleets.

A list of our diesel services include:

  • Factory-Scheduled Maintenance
  • Diesel Diagnostics & Performance Tuning
  • Fuel Injector Service & Replacement
  • Diesel Particulate Filter (DPF) Cleaning & Repair
  • EGR Valve & Emissions System Service
  • Glow Plug & Starting System Repair
  • Turbocharger Repair & Replacement
  • DEF System Diagnostics & Maintenance
  • Cooling System & Water Pump Service
  • Oil & Filter Changes (Synthetic Diesel Oil)
  • Transmission & Drivetrain Service
  • Fleet Maintenance & Inspection Programs

Each service includes a Digital Vehicle Inspection (DVI) with photos and technician notes, so you see exactly what’s happening under the hood before any work begins.

Signs Your Diesel Engine Needs Service

If your diesel isn’t performing like it should, it may be time for inspection or repair. Common signs include:

  • Hard starting or long crank times
  • Loss of power or reduced fuel economy
  • Rough idle or knocking sounds
  • Excessive black, white, or blue smoke
  • Check engine or DPF warning lights
  • Frequent regeneration cycles or clogged filters

Ignoring these warning signs can lead to expensive damage. Our technicians will diagnose the cause quickly and get you back on the road with confidence.

Why Clackamas Diesel Owners Trust Rob’s Automotive Repair

Since 2004, Rob’s Automotive Repair has provided reliable, transparent, and high-quality diesel service across Clackamas County. We take pride in helping local drivers and fleets stay productive with dependable diesel power.

Here are just a few of the reasons our automotive customers trust us:

  • 48-Month / 48,000-Mile Nationwide Warranty
  • ASE-Certified Diesel Technicians
  • Locally Owned & Operated for Over 20 Years
  • Fleet & Commercial Service Experts
  • Digital Vehicle Inspections for Full Transparency
  • Same-Day Service on Most Repairs
  • Comfortable Waiting Area with Coffee, Wi-Fi & TV

We proudly serve Clackamas, Happy Valley, Milwaukie, Gladstone, Southgate, and surrounding Oregon communities.

Fleet & Commercial Diesel Services

Your business depends on reliable transportation — and we’re here to make sure your fleet stays running. We offer customized fleet maintenance programs designed to minimize downtime and extend vehicle life. From preventive maintenance to DOT inspections, our team helps you plan, track, and maintain your fleet with precision.

Schedule Your Diesel Service Today

When it comes to diesel maintenance and repair, experience matters. Whether you own a single truck or manage an entire fleet, trust Rob’s Automotive Repair in Clackamas, Oregon for expert service, transparent communication, and dependable results.

Call 503-650-6101 or schedule your appointment online. Rob’s Automotive Repair — Clackamas’ trusted experts for diesel service, repair, and fleet maintenance since 2004.

48 Months / 48K Mile Warranty Nationwide Coverage
  • Avatar Oran H. ★★★★★ a day ago

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Business Hours:
Open Monday through Friday
from 7:00am – 6:00pm

Proudly serving Clackamas County and surrounding communities

Rob’s Automotive Repair Center is locally owned and operated in Clackamas, Oregon, and we’re honored to work with vehicle owners from across the area. We regularly serve customers from Happy Valley, Damascus, Boring, Oregon City, Gladstone, Oatfield, Pleasant Valley, Barton, Barclay Hills, Holcomb, Hillsview, and nearby Clackamas County communities. Whether you’re close by or making the short drive to our shop, you’ll receive the same quality service, professional repairs, and transparent communication every visit.

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