DIESEL · SERVICE
Diesel Service
in Clackamas, OR.
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.
Signs Your Diesel Engine Needs Service
Hard Starts or Long Cranks
Difficulty starting or extended crank times often signal injector, fuel-pump, or glow-plug issues — we diagnose all three.
Loss of Power or Poor Fuel Economy
Reduced power under load, drops in MPG, or excessive idle smoke point to fuel-system, turbo, or DPF concerns.
Rough Idle or Knocking Sounds
Uneven idle, audible knocking, or shaking at low RPM usually trace back to injectors, glow plugs, or compression issues.
Excessive Smoke
Black, white, or blue smoke from the exhaust each indicate different problems — combustion, coolant, or oil-burning.
What we cover.
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
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: 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.
- Factory-Scheduled Maintenance
- Diesel Diagnostics & Performance Tuning
- Fuel Injector Service & Replacement
- Diesel Particulate Filter (DPF) Cleaning & Repair
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: We proudly serve Clackamas, Happy Valley, Milwaukie, Gladstone, Southgate, and surrounding Oregon communities.
- 48-Month / 48,000-Mile Nationwide Warranty
- ASE-Certified Diesel Technicians
- Locally Owned & Operated for Over 20 Years
- Fleet & Commercial Service Experts
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. Call Us
(503) 650-6101
- Lana W. ★★★★★ 3 hours ago Rob’s Automotive Repair was wonderful! I took my car in to be thoroughly inspected for any issues. They were photographed and assessed and then sent to me for approval before any work was done. They gave me options about what was needed … read more now, and issues that I could have done later. I like the way they do business and knew I could trust them. I would highly recommend to family and friends. Cheyenne was my representative who helped me…excellent!!! They even offer rides to and from their business for free (Lyft).
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