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Diesel Mechanic Repair Shop

If you are searching for a Diesel Engine Repair Shop or a Diesel Mechanic in Fuquay-Varina, NC, CDT Performance & Off-Road Services can help! Call 984-464-8937

Diesel Mechanics Performance Specialists Fuquay-Varina, NC

At CDT, we pride ourselves on providing top-notch diesel repair and maintenance services. Our team of experienced and certified technicians is dedicated to ensuring your diesel vehicle performs at its peak, keeping you safe and satisfied on the road. We specialize in servicing a wide range of diesel-powered vehicles, including cars, trucks, and commercial vehicles.

Our ASE shop Certified Diesel Repair Mechanics complete repairs on Chevy Duramax, Dodge Cummins, and Ford Power Stroke diesel engines.  We use the same industry technology and parts but at a much lower cost than going to a dealer.  Save up to 40% off dealer and take advantage of a 3Yr 36K Warranty at CDT Performance & Off-Road, the best dealer alternative.

Comprehensive Diesel Repair Services

Diesels are the backbone of commercial businesses and we understand that they need to be out in the field earning revenue instead of in a repair shop.  Let one of our Master ASE Certified Diesel Repair Mechanics help you properly maintain and/or repair your diesel-powered vehicle. For diesel repair services in Raleigh area, your trusted mechanic is at CDT Performance & Off-Road. Since 2012, our team maintains a high standard for customer service, while completing your diesel service needs with integrity and expertise.

We understand the need for reliable performance, exceptional torque, towing power and high fuel efficiency.  Even with fewer moving parts, diesel engines require regular service to prevent loss of performance or breakdowns. Because of the specialized nature of diesel engines, you’ll want an expert to handle all your diesel service matters.

Expert Diesel Engine Repair Technicians

Our team of expert technicians is well-equipped to handle all types of diesel engine repairs, from minor fixes to major overhauls. We are committed to providing you with high-quality repair services that ensure your diesel engine performs optimally.

Genuine Parts and Quality Workmanship

We use only genuine parts and employ industry-leading techniques to ensure the highest quality workmanship. Our dedication to excellence guarantees that your diesel engine repair will be completed to the highest standard.

Preventative Maintenance for Diesel Engines

Routine Diesel Engine Maintenance

To keep your diesel engine running smoothly, we offer routine maintenance services tailored to your vehicle's needs. These services include oil changes, fuel filter replacements, and coolant system checks, all designed to prevent costly repairs down the line.

Common Diesel Warning Signs That Will Require Repair

If you notice any of the problems listed below, it’s time for repair. Common warning signs of diesel engine problems include:

  • Check engine light on
  • Engine hard starts
  • Engine oil
  • Engine oil found inside cooling system
  • Engine oil is 15°F higher than coolant temperatures
  • Engine overheats
  • Engine runs poor when cold
  • Leaking coolant or excessive coolant loss
  • Long cranking times
  • Los of performance
  • Poor engine performance
  • Using more fuel than usual
  • White, black or blue smoke coming from exhaust system

Common Problems and Repairs for Diesel Engines

Despite their durability and reliability, diesel engines are still prone to certain problems and failures. Here are some of the most common problems that diesel engines experience and the repairs that are typically required to fix them.

1. Glow Plug Failure

Glow plugs are responsible for heating the air inside the engine cylinders to aid in starting the engine. When they fail, it can be difficult or impossible to start the engine. The repair typically involves replacing the faulty glow plug with a new one.

2. Fuel Injector Issues

Fuel injectors are responsible for delivering fuel to the engine cylinders at the right time and in the correct amount. When they fail, the engine may not start, or it may run poorly. Repairs may include replacing the faulty injector or cleaning it to restore proper function.

3. Turbocharger Failure

The turbocharger is responsible for increasing the power output of the engine by compressing the air that enters the engine. When it fails, the engine may lack power or have poor acceleration. Repairs may involve replacing the turbocharger or repairing damaged components.

4. EGR Valve Problems

The EGR valve is responsible for recirculating exhaust gases back into the engine to reduce emissions. When it fails, the engine may run poorly, produce excessive smoke, or have reduced power. Repairs may involve replacing the faulty valve or cleaning it to restore proper function.

5. Cooling System Failure

The cooling system is responsible for regulating the temperature of the engine to prevent overheating. When it fails, the engine may overheat, which can cause serious damage. Repairs may involve replacing faulty components such as the water pump, thermostat, or radiator.

6. Engine Oil Contamination

Diesel engines are known for producing a lot of soot and other contaminants that can contaminate the engine oil. When the oil becomes contaminated, it can cause engine damage or failure. Repairs may involve replacing the contaminated oil with fresh oil and replacing the oil filter.

Most Common Diesel Repairs Common diesel repair services performed by our diesel mechanics:

  • Air conditioning and heating system repairs
  • Brake system repairs
  • Diesel Air intake system repair and replacing parts
  • Diesel Charging system repair
  • Diesel EGR system repair
  • Diesel Glow plug repair and replacement
  • Diesel High pressure pump repair, rebuild, replacement
  • Diesel Hydro boost system repair, replacement
  • Diesel Turbo repair, rebuild, replacement
  • Electrical system repairs
  • Engine diagnostics
  • Engine rebuilds and overhauls
  • Fuel system repairs
  • Performance upgrades
  • Routine maintenance, such as oil changes and filter replacements
  • Suspension and steering repairs
  • Transmission repairs

Diesel Emissions Service

We understand the importance of maintaining a clean and efficient exhaust and emission system for your diesel vehicle. Our technicians provide comprehensive services to ensure your diesel engine meets emission standards and operates efficiently, minimizing your environmental impact.

When you bring your diesel-powered vehicle to CDT Performance & Off-Road in, rest assured that only ASE-Certified, experienced technicians will perform your diesel service. Whether you need emissions service, fuel filter replacement, injector rebuild or cooling system service, count on us for a full range of diesel services. Using cutting-edge tools and equipment for all diesel service, we ensure the best results every time.

Your Ford might require maintenance. Perhaps your Chevy needs the Check Engine light diagnosed. In any case, we’ll get the job done correctly. For diesel service that will last, we always use OEM and top-shelf aftermarket parts for all diesel services and repairs at CDT Performance & Off-Road, backed by our warranty.

Your Trusted Partner for All Your Diesel Repair Needs

At CDT, we are committed to providing you with unparalleled diesel repair and maintenance services. Our team of certified technicians, advanced diagnostic equipment, and dedication to customer satisfaction ensure that we are your trusted partner for all your diesel engine needs. Contact us today to schedule an appointment and experience the difference that our expertise and attention to detail can make.

DIY vs. Professional Repairs

While some diesel engine repairs can be done by a knowledgeable DIYer, others require specialized tools and expertise that only a professional diesel mechanic can provide. Attempting to perform a repair without the proper knowledge or tools can result in further damage to the engine or even personal injury. It's always best to consult with a professional diesel mechanic for any repairs beyond routine maintenance.


  1. How often should I have my diesel engine serviced?

Diesel engines should be serviced according to the manufacturer's recommendations, which can vary depending on the make and model of the engine. In general, diesel engines should be serviced more frequently than gasoline engines due to the higher stress they endure. It's best to consult with a qualified diesel mechanic to determine the ideal service schedule for your specific engine.

  1. How can I tell if my diesel engine needs repairs?

Some common signs that a diesel engine needs repairs include:

  • Difficulty starting or slow cranking
  • Loss of power or acceleration
  • Rough or uneven idling
  • Excessive smoke from the exhaust
  • Engine warning lights or error codes
  • Unusual noises such as knocking, rattling, or grinding

If you notice any of these symptoms, it's important to have your engine inspected by a qualified diesel mechanic as soon as possible.

  1. Can I use regular engine oil in a diesel engine?

No, regular engine oil is not suitable for use in diesel engines. Diesel engines require specialized diesel engine oil that is designed to withstand the high stresses and temperatures associated with diesel engines. Using regular engine oil in a diesel engine can lead to reduced performance and engine damage.

  1. Can diesel engines run on biodiesel?

Yes, many diesel engines can run on biodiesel, which is a renewable and environmentally friendly alternative to petroleum diesel. However, not all diesel engines are compatible with biodiesel, and it's important to consult with the manufacturer or a qualified diesel mechanic before using biodiesel in your engine.

  1. What should I do if my diesel engine won't start?

If your diesel engine won't start, there are several possible causes, including a dead battery, a faulty starter motor, or fuel delivery issues. It's best to have your engine inspected by a qualified diesel mechanic to determine the root cause of the problem and to avoid causing further damage to the engine.

For long-lasting diesel service and repairs you can trust, call 984-464-8937 CDT Performance & Off-Road in Fuquay-Varina, NC.