The Justice Department says it will no longer pursue criminal charges for removing emissions controls from diesel vehicles.

In a huge win for the diesel "delete" crowd, an internal DOJ memo reportedly called for dropping criminal charges "targeting ...

The Trump administration has announced it will no longer criminally prosecute “diesel delete” cases of truck owners altering ...

A dual-fuel conversion system can offer some of the fuel- and emissions-saving benefits of a natural gas engine without going out and buying a brand-new truck. Recent changes in Environmental ...

The air filter setup on most diesels is the same as on gasoline-powered vehicles, with the filter located inside the cold air collector box located under the hood. You have to take one big precaution ...

The emissions system at the heart of the global Volkswagen diesel mess comprises many complex components, all of which have to work perfectly and consistently all the time, or the vehicle will fail to ...

Failure to properly maintain your cooling system is a leading cause of catastrophic diesel engine problems, accounting for approximately 40% of engine failures. The damage being done is difficult to ...

The fuel system in a diesel engine performs the same functions as it does in gas-powered engines and consists of many of the same parts. After the fuel gets to the cylinders, however, there’s a ...

Is your diesel truck struggling with poor engine performance, sluggish acceleration or reduced fuel economy? You might have a problem with your exhaust gas recirculation system. That might seem like a ...

The clearances inside diesel injection system parts are closer than those found in any other technology. The plungers and needle valves in injectors need to fit tightly to ensure precise metering and ...

High-pressure common rail fuel (HPCR) systems are standard on nearly every diesel engine today, from heavy equipment to over-the-road trucks, light-duty trucks, large generators and more. HPCR fuel ...