Guy Motors
  • Guy Motors
  • Auto Repairs
    • BG Products
    • Engines & Transmissions
    • Car Care Tips
    • Mobile 1 Synthetic Oil
  • Key Fob Programming
  • Diesel Repair
  • Tire Services
  • Contact Us
    • Mechanicsville Location
    • Prince Frederick Location
  • More
    • Guy Motors
    • Auto Repairs
      • BG Products
      • Engines & Transmissions
      • Car Care Tips
      • Mobile 1 Synthetic Oil
    • Key Fob Programming
    • Diesel Repair
    • Tire Services
    • Contact Us
      • Mechanicsville Location
      • Prince Frederick Location
Guy Motors
  • Guy Motors
  • Auto Repairs
    • BG Products
    • Engines & Transmissions
    • Car Care Tips
    • Mobile 1 Synthetic Oil
  • Key Fob Programming
  • Diesel Repair
  • Tire Services
  • Contact Us
    • Mechanicsville Location
    • Prince Frederick Location

Diesel Repair & Maintenance Services

  

Power. Performance. Reliability. Diesel drivers know their vehicles are built differently, and they deserve specialized care. At Guy Motors, we provide expert diesel engine diagnostics, repair, and factory-scheduled maintenance for both diesel cars and trucks.


With locations in Mechanicsville and Prince Frederick, MD, our certified technicians bring years of experience and passion for diesel technology. Whether you're keeping your work truck road-ready or giving your diesel-powered vehicle the attention it deserves, we’ve got the tools and expertise to do it right.

Why Choose Guy Motors for Diesel Service?

  

Diesel vehicles have unique engines, fuel systems, and performance needs. That’s why you need a team who understands:


  • High-compression engine repair
  • Turbocharger diagnostics and service
  • Emissions systems unique to diesel platforms
  • Glow plug systems and cold-start support
  • Diesel fuel injection and filtration care


We have the specialized equipment, parts, and diagnostic tools required to handle even the most complex diesel repairs. Our service bays are built to accommodate heavy-duty vehicles and light-duty diesel cars alike.

Common Diesel Services We Provide

  

Whether your diesel is blowing smoke or having trouble starting, Guy Motors is here to help. Our diesel services include:


  • Hard Starting & Drivability Diagnostics
  • Excessive Noise or Smoke Troubleshooting
  • Glow Plug Testing & Replacement
  • Turbocharger Inspection & Repair
  • Mechanical Engine Repairs & Rebuilds
  • Routine Diesel Maintenance (Oil, Filters, Fluids)


Not sure what’s wrong? We specialize in pinpointing the issue quickly so you can get back to driving with confidence.

Preventive Maintenance for Diesel Engines

  

Proper diesel maintenance = longer engine life. We help you stay ahead of problems by performing routine services based on your manufacturer’s recommended intervals, including:


  • Coolant flushes
  • Oil and filter changes
  • Fuel system cleaning
  • Belt and hose inspections
  • Exhaust aftertreatment checks (DEF, DPF)


Neglecting preventive care on a diesel vehicle often leads to costly repairs. Let us help you avoid unnecessary downtime and expense.

Maryland Diesel Drivers Trust Guy Motors

  

From everyday diesel commuters to power-loving truck owners, our customers appreciate our commitment to doing diesel work right the first time. We proudly serve diesel owners in:


  • Mechanicsville, MD
  • Prince Frederick, MD
  • Hughesville, MD
  • And surrounding Southern Maryland areas


Need a diesel mechanic you can trust? Call or visit your nearest Guy Motors location today to schedule diagnostics or maintenance with our diesel specialists.

Email Guy Motors MechanicsvilleEmail Guy Motors Prince Frederick
  • Guy Motors
  • Key Fob Programming
  • Diesel Repair
  • Mechanicsville Location
  • Prince Frederick Location

Guy Motors

Copyright © 2025 Guy Motors - All Rights Reserved.

Powered by

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

Accept