Why Are Diesel Repairs Different Than Other Engine Repairs

Why Are Diesel Repairs Different Than Other Engine Repairs

By Ron Haugen

There was a time a few years ago when everyone wanted to jump on the bandwagon for diesel engine cars. Diesel was cheap, the cars ran just as good and people liked them. Until the manufacturers of diesel realized they could make some extra money by changing the price of the fuel needed in order to run these types of engines. Down went the popularity of diesel engines in cars.

But diesel engines still exist. They often power the bigger vehicles, like school buses, semi-trucks and delivery trucks that are on the road today. Why are these vehicles still powered by diesel when it costs more to power the car? Because they are built differently and works better with heavier vehicles.

There are a lot of differences between the diesel motors and the regular engine of a car that is powered by gasoline. The biggest difference is how the car starts. A diesel engine compresses air first and then heats up, and then the fuel (diesel) ignites and powers the engine. The other engines has the fuel mixed with the air and then get compressed by the piston chambers, causing it to fire and power the car.

Technicians have argued that the they work more efficiently with big loads, therefore trucks and buses have largely remained diesel. What happens when you need to fix that type of engine? In reality, it really isn't that big of a difference. Engines are engines are engines, so they have a lot of components that are the same. However, the pistons, the fuel chambers and the air intake are what vary.

A mechanic can go to school to simply work on diesel engines alone. They can specialize in them to make themselves desirable to hire at a dealership that sells semis or they can market themselves to a dealership that sells and services both kinds of engines. A diesel mechanic might be able to fix a regular engine, but they would also be able to focus on and diagnose a problem with a diesel engine more easily than someone who is not specially trained on it is.

Having a diesel engine might not save you money on fuel expenses any more. The engine might be able to better pull a heavy load more efficiently. But no matter what, if your diesel engine needs repairs, seek out a mechanic who is specifically trained in them.

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