In addition to our general auto repair services, we have mechanics specially trained in diesel maintenance and repair.


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Diesel engines have some powerful benefits and can be a great asset to a vehicle. However, because diesel engines are significantly different from regular gasoline engines, you will want to make sure to use a specialized diesel mechanic to service and repair your diesel engine. Whether you are looking to service a larger truck, a pickup, a fleet vehicle, or even a passenger vehicle or other machinery, Clegg Auto has the diesel expertise to help meet your needs. Here are the basics of what you need to know about diesel maintenance and repair and how our diesel mechanics at Clegg Auto can help you keep your diesel engine running in top condition.

Some of the most common diesel problems and repairs include:

  • Oxidized oil
  • Humidity Reactions
  • Hard Starting
  • Lack of Power
  • Replacing defective glow plugs
  • Engine knocking
  • Wrong weight viscosity
  • Faulty Lead/Acid Storage batteries
  • Overly noisy engines
  • Discolored smoke from the exhaust.
Hiring Automotive Lead Technician-Clegg Auto Spanish Fork
Most diesel engine problems can also be commonly diagnosed through the color of smoke from the exhaust. Black smoke often indicates an incorrect fuel to air ratio and can be caused by many things such as faulty injectors, injector pumps, bad air filters, a broken EGR valve, or even a turbocharger issue. Blue smoke means that the engine is burning motor oil, usually caused by a leak in the engine. This can sometimes be a turbocharger issue or a problem with valves or an oil filter. Lastly, white smoke indicates that fuel isn’t being burned property within the engine either due to too much fuel being injected or not enough heat or compression.

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