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Diesel Engine Repair


True to its name, Change Auto & Diesel provides repair and maintenance services for diesel vehicles as well as gasoline-powered cars. Our diesel engine repair in Calgary is performed by experienced technicians who have the additional training and knowledge that these high-powered engines require. We use top-quality diagnostic equipment and provide professional service that keeps your diesel vehicle running smoothly and efficiently. Our shop stocks many specialized diesel auto parts and services everything from trailers to large vans and busses. You can rely on us for minor repairs to complete engine overhauls!


We understand that many diesel vehicles are used for commercial purposes, where any delay isn't good for business. You can expect our technicians to work in a timely manner for the most prompt service possible. We'll also keep you fully informed on your vehicle's progress while it's with a technician.

How IT Is Different

Both diesel and gas engines are internal combustion engines that convert fuel into energy. Combustion allows the engines to work in a series of small explosions, and this is where the two engines differ. Gas engines operate when fuel is mixed with air, then compressed by pistons and ignited by sparks from spark plugs. Diesel engines compress the air before injecting the fuel directly into the combustion chamber. Air heats up when it’s compressed, so the fuel in diesel engines ignites without the use of sparks. Using this form of direct injection, diesel engines are more efficient than gas engines.


Diesel engines run on diesel fuel which, when compared to gasoline, is:

  • Thicker

  • Heavier

  • Slower to evaporate

  • Higher in energy density

These factors allow diesel engines to get better mileage than gas engines. Diesel engines emit very small amounts of greenhouse gases such as carbon monoxide that lead to global, but they emit relatively high amounts of soot and nitrogen compounds that cause acid rain and other issues.

Frequently Asked Question

What are the causes of oil leakage?

Oil leakage happens mainly due to degraded engine gaskets, improper installation of oil gaskets and leaky valve seals.

What should I do if my vehicle overheats?
Overheating of the vehicle damages your diesel engine. In such a situation, pull off your vehicle and shut the engine off. Do not try to check the fluid level in the radiator as it can cause you severe burns.

When to replace the fuel filters?
Replace the fuel filter as instructed in the vehicle manual.

Uses for Diesel Engines

Diesel engines are built ruggedly to withstand the rigours of high compression. They are more efficient than gas engines, and they can work for much longer before needing repairs. Diesel engines also provide more torque to the driveshaft of your vehicle, which allows cars to be faster from standing start and can even out-tow their gas-powered counterparts. Because of their efficiency and fuel economy, diesel engines are used in a wide variety of vehicles and machinery, including:

  • Freight trucks

  • Boats

  • School buses

  • City buses

  • Trains

  • Cranes

  • Farming equipment

  • Emergency response vehicles

  • Power generators

  • Pickup trucks

If gas engines are fast-working like racehorses, then diesel engines are stronger and more enduring like workhorses, making them perfect for use in work trucks and heavy-duty equipment.


Whether you use a diesel engine in your work truck to ensure efficiency or you drive a bus that runs on diesel fuel, you need it to be running at top capacity at all times. Whether you need regular maintenance or diesel engine repair in Calgary, Change Auto & Diesel has you covered. Our experienced team uses advanced diagnostic equipment to diagnose problems and develop solutions. Call today to schedule an appointment with us.

Call us for a free estimate or to schedule a service appointment.

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