While an engine compression tester may not be the most common tool in a mechanic's garage, they can be very useful, ...

The diesel engine was invented in the 1890s and has been in use in commercial vehicles and passenger cars for over a century. Diesel engines remain popular for their reliability and fuel economy, ...

Compression in a diesel engine is essential for effective and efficient performance. And when compression is lacking, damage can result. That is why it’s imperative to know whether your engine’s ...

With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...

OBD-II diagnostic device BlueDriver interprets engine error codes to suggest what might need fixing, and lets you know if your car is ready for a smog check. Wayne ...

Although Mazda's Skyactiv engines are pretty trouble-free and they'll last for quite a while, there are a few notable issues ...

An average car dies many deaths, but with the right owner, it can always live to drive another day. When something fails, a DIY diagnosis and fix can save money and eliminate the inconveniences of ...

Homogeneous charge compression ignition (HCCI) engines combine a diesel's torque and fuel efficiency with a gas engine's cleaner emissions. The HCCI technique has been a goal of automakers since the ...

The simple, non-negotiable truth is this: when it comes to outright fuel efficiency, the diesel engine is, mechanically and chemically, superior.

Infiniti has revealed an engine concept this year, and it is of the variable compression kind. While not the first of its type as a concept, this motor might bring a new line of internal combustion ...