From Imagine America What Does a Diesel Technician Do? Sponsored by: Buses, trucks, trains, and diesel engine cars help keep our country running by transporting people and supplies across the world. It takes a lot of horsepower and highly skilled mechanics to keep these vehicles in motion—that’s the job of diesel technicians. These highly skilled professionals are in charge of inspecting, maintaining, and repairing these machines so they are ready to perform when needed. But what does a diesel technician do? Where Does a Diesel Technician Work? Diesel engines are used in cars, trucks, construction machinery, mining and farm equipment, and railway, subway, and locomotive vehicles. Because of this wide variety in how diesel technology is used across many different industries, diesel technicians can find employment in all kinds of work settings throughout the country. Cars and Trucks Diesel technicians w...