DEF is a key component in lowering pollutants emitted from diesel engines, helping to reduce harmful emissions.

Modern internal combustion engines — including those that run on diesel fuel — require a lot of special parts and systems to prevent dumping excess emissions into the atmosphere. Not only are those ...

Symptoms of a malfunctioning NOx sensor include increased fuel consumption, as well as reduced power and acceleration. If a sensor fails, it will also trigger an on-board diagnostic (OBD) code, ...

Ultra low sulfur diesel (ULSD) is a diesel fuel with a maximum of 15-ppm sulfur content. Diesel engines equipped with advanced emissions after-treatment devices, such as catalyzed diesel particulate ...

Have you ever wondered how fuel gets from the tank of a car to its engine? Well, for a diesel engine, it all starts with the lift pump, which is a low-pressure pump that draws the fuel up and out of ...

We've seen some bonkers engines in our day, and truth be told, this three-cylinder diesel isn't the strangest of the lot.

We may receive a commission on purchases made from links. I first fell for turbo-diesels many years ago. A sporty-looking Rover model arrived in the family garage in a dreadful state — the owner had ...

Internal combustion engine blowby, whether gasoline or diesel, occurs when part of the compressed mixture of air and fuel leaks past the piston rings during the compression or power strokes of a ...

Car expert Lauren Fix said you must take care of your investment to get the most return. Here are tips to help drivers make ...

Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations in 2010 when the Environmental Protection Agency mandated selective catalytic reduction technology. Selective ...