Diesel Service & Repair

Diesel Engine Services

At Smith Auto in Cleveland, Tennessee, we specialize in providing top-tier diesel engine repair and maintenance services. When it comes to your diesel vehicle, we understand that specialized care and expertise are essential for ensuring optimal performance and longevity. With our team of ASE-certified technicians, you can have peace of mind knowing that your diesel vehicle is in capable hands when you bring it to our auto repair shop.


Diesel vs. Standard Combustion Engines

Understanding the distinctions between diesel and standard combustion engines is vital. Diesel engines ignite fuel through compression, in contrast to standard combustion engines that rely on a spark plug. Diesel engines run on diesel fuel, which boasts a higher energy density and is less volatile compared to the gasoline used in standard engines. With higher compression ratios, diesel engines deliver greater efficiency and torque, making them an excellent choice for heavy-duty applications. Standard combustion engines, on the other hand, are prevalent in smaller vehicles and applications that prioritize quick acceleration, offering a different set of advantages.


Common Diesel Engine Problems to Watch for:

  1. Loss of Power: A common fuel-related issue, often caused by dirty fuel filters, excessive lubrication, fuel injector problems, or loose throttle linkage. Maintaining power is essential for optimal performance.
  2. Glow Plug Failure: Diesel engines use glow plugs to start in cold weather. These plugs can wear out over time, leading to starting difficulties. Regular inspection and replacement are necessary.
  3. Hard-to-Start Issues: Correct weight viscosity of lubricants is crucial for easy starting. Diesel lubricants are thicker than gasoline, so consulting your mechanic is important to avoid hard starting problems.
  4. Contaminated Fuel: Diesel fuel is more prone to contamination due to its thickness. Regularly check your fuel source and maintain clean fuel storage to avoid issues arising from contaminated fuel.
  5. Faulty Lead/Acid Storage Battery: A faulty battery can lead to starting problems. Ensuring your battery is in good condition is essential for reliable starts.
  6. Black Exhaust: Emissions issues resulting from an imbalanced air/fuel ratio can create black exhaust. Causes may include a clogged air filter, broken injector, malfunctioning EGR valve, or issues with the turbocharger.
  7. Oxidation of the Oil: When a diesel vehicle sits idle for extended periods, the oil can start to oxidize, causing poor lubrication. This may result from air getting into the oil.
  8. Excessive Noise: While diesel engines are inherently louder, unusual or excessive noises can indicate problems with fuel injectors, affecting compression balance and overall performance.
  9. Engine Overheating: Overheating can be a significant concern for diesel vehicles, often caused by pushing the car past its limits or issues within the engine cooling system. Causes may include clogged diesel injectors, coolant leaks, a damaged thermostat, or a defective cooling fan. Proper maintenance is vital to prevent engine overheating issues.

Recognizing and addressing these common diesel engine problems promptly can help you maintain the efficiency and longevity of your diesel vehicle. If you encounter any of these issues, don’t hesitate to schedule diesel repairs with our ASE-certified technicians at Smith Auto. We’re here to ensure your vehicle runs smoothly and reliably.


Smith Auto Diesel Engine Services

  • Fuel Filters: Clean fuel filters are paramount for maintaining proper engine performance. Our experts meticulously inspect and replace fuel filters to ensure your diesel vehicles run efficiently and with the power you expect.
  • DEF Service: Diesel Exhaust Fluid (DEF) is a crucial component for reducing emissions in modern diesel engines. Our technicians are highly proficient in DEF system maintenance, ensuring that your diesel vehicle remains environmentally compliant.
  • Comprehensive Maintenance Plans: We offer comprehensive maintenance plans tailored to the unique needs of diesel vehicles. These plans encompass regular inspections, fluid changes, and preventive maintenance to safeguard your diesel vehicle against costly breakdowns.


Contact us today at Smith Auto, your trusted source for diesel engine repair. Conveniently located in Cleveland, TN, we proudly serve the surrounding areas. Whether you need a diagnostic assessment, preventive maintenance, or specific repairs, our experienced team is here to keep your diesel vehicle performing optimally.