When a warning light comes on, your truck loses power, or something simply isn’t running the way it should, the first step is figuring out what’s actually causing the problem.
MD Truck Repair provides heavy-duty diesel engine diagnostics for owner-operators, fleets, and businesses in the Edmonton area. Our technicians combine diagnostic software, testing, and hands-on troubleshooting to identify the problem and determine what needs to happen next.
Find the Problem Before Replacing Parts
A fault code can point you in the right direction, but it doesn’t always tell the whole story.
Proper diagnostics means looking beyond the code to determine what’s actually causing the problem. Our technicians use diagnostic data, testing, visual inspection, and hands-on troubleshooting to get to the source of the issue.
No guessing and no replacing parts just to see if the problem goes away.
We’ll explain what we’ve found and recommend the appropriate next step.
Heavy-Duty Diesel Diagnostic Testing
Different symptoms require different types of testing. Depending on the problem, MD Truck Repair’s diagnostic process may include:
- Computer diagnostics and fault-code analysis
- Sensor and live-data analysis
- Engine performance testing
- Pressure and temperature checks
- Fuel-system testing
- Fuel-flow and leak testing
- Visual inspection and hands-on troubleshooting
- Emissions and aftertreatment system diagnostics
The goal isn’t simply to identify a fault code. It’s to determine what’s causing the problem so the right repair can be made.
Emissions & Aftertreatment Diagnostics
Modern heavy-duty diesel trucks rely on emissions and aftertreatment systems that can create their own set of warning lights, fault codes, and performance issues.
MD Truck Repair has diagnostic software to troubleshoot emissions and aftertreatment systems and identify problems within the system.
Once the issue is identified, we’ll explain what we’ve found and what needs attention.
Signs Your Diesel Engine Needs Diagnostics
Heavy-duty diesel problems can show up in many different ways. Your truck may need diagnostic testing if you’re experiencing:
- Check engine or warning lights
- Loss of power
- Rough running or idling
- Hard starting or no-start conditions
- Unusual engine noises
- Excessive or unusual exhaust smoke
- Changes in fuel economy
- Recurring engine problems
The same symptom can have several possible causes, which is why properly diagnosing the problem matters before moving forward with repairs.
From Diagnosis to Repair
Finding the problem is only the first step.
Because MD Truck Repair is a full-service heavy-duty repair shop, our technicians can take what they learn during the diagnostic process and determine the appropriate repair.
That could mean addressing an electrical, fuel, emissions, or mechanical issue—or, in more serious cases, major internal engine work.
If the engine requires extensive repair, MD Truck Repair also provides complete heavy-duty diesel engine rebuild and replacement options.
Engine Rebuilds & Replacements
Diesel Diagnostics for Trucks & Equipment
Over-the-road heavy-duty trucks are our primary focus, but MD Truck Repair also diagnoses and repairs construction and other diesel-powered equipment.
If you have a diesel engine problem and aren’t sure whether it’s something we work on, contact us with information about the equipment and the problem you’re experiencing.
Heavy-Duty Engine Diagnostics in Edmonton
MD Truck Repair has been helping owner-operators, fleets, and businesses diagnose and repair heavy-duty truck problems since 1995.
When something isn’t running the way it should, our job is to find the cause, explain what we’ve found, and give you straightforward information about what needs to be repaired.
Diesel Engine Diagnostic FAQs
What are common signs that my diesel engine needs diagnostics?
Warning lights, loss of power, rough running, unusual noises, excessive smoke, hard starting, changes in fuel economy, or recurring engine problems can all be reasons to have your truck diagnosed.
Can a diagnostic scan tell you exactly what’s wrong with my truck?
Not always. A fault code can identify a system or condition that needs attention, but additional testing may be necessary to determine the underlying cause of the problem.
What happens during a heavy-duty diesel engine diagnostic?
The diagnostic process depends on the symptoms and the truck. It may include fault-code analysis, sensor and live-data analysis, performance testing, pressure and temperature checks, fuel-system testing, visual inspection, and hands-on troubleshooting.
Can MD Truck Repair diagnose emissions and aftertreatment problems?
Yes. MD Truck Repair uses diagnostic software to troubleshoot heavy-duty diesel emissions and aftertreatment systems and identify problems within the system.
Can you diagnose why my diesel truck won’t start?
Yes. A hard-start or no-start condition can have several possible causes. Diagnostic testing can help determine whether the problem involves the starting system, electrical system, fuel delivery, engine, or another component.
What happens if diagnostics find a major engine problem?
We’ll explain what we’ve found and discuss the available repair options. If major internal engine work is required, MD Truck Repair also provides heavy-duty diesel engine rebuild and replacement services.
Engine Rebuilds & Replacements
Do you provide engine diagnostics for fleets?
Yes. MD Truck Repair provides heavy-duty diesel diagnostics and repair for individual owner-operators as well as commercial fleets and businesses.
Can you diagnose diesel construction equipment?
Yes. While over-the-road trucks are our primary focus, we also diagnose and repair construction and other diesel-powered equipment.
Something Not Running Right?
Don’t guess at the repair. Let us determine what’s causing the problem and talk you through the next step.