In my 35-plus years of working on cars, I have encountered nearly every frustrating troubleshooting problem in the book. Part of the issue stems from my affinity for old Jeeps and classic cars, which ...

One of the most difficult tuning problems to overcome is the seemingly ever-present engine vacuum leak. Vacuum is an important component of the internal-combustion process because it controls basic ...

Cummins’ 5.9L diesel engines have many wonderful traits, from the simplicity of their design to the durability and reliability of their internal components. However, the powerplants also have parts ...

Some very valuable tuning tools are greatly misunderstood. Take the lowly vacuum advance canister. Many enthusiasts dismiss this device as superfluous—or worse—only for emission-controlled engines.

Spacex fired up the first Raptor engine designed for the vacuum of space ahead of its future use on its Starship rockets. The Raptor Vacuum was recently shipped from the company’s California ...

SpaceX lit up the Texas coast again by firing an engine not designed for use on the ground. The company installed and performed a test burn one of its Raptor Vacuum engines for the first time attached ...