Leaning the mixture is an underutilized technique for pilots to significantly improve fuel economy, extend flight endurance, and prevent engine issues like spark plug fouling. Proper leaning optimizes ...

Let's begin with the fundamentals of mixing air and gasoline for the purpose of producing power. (Rudolf Diesel's compression ignition is a different thing entirely. We'll touch on it briefly in what ...

In Part One of this series (January '93), we discussed how an internal-combustion engine heats a fuel-and-air mixture to convert it into mechanical energy. In February, we reviewed how a four ...