Over time and miles, your car might start to slow down. It might not accelerate as quickly as it once did; the engine may not run as smoothly as you remember, or the fuel economy may dip—but ...

There are numerous differences between diesel and gas engines, including the number of fuel filters each uses. Here's why ...

Aircraft engines utilize either carburetors, which are simpler, less expensive, and prone to internal icing, or more complex fuel injection systems. Fuel injection systems offer greater power output ...

The first thing you should understand is that direct-port, constant-flow fuel-injection—Hilborns, En-derles, Crowers, whatever—were never designed, nor intended, to be run on the street. All of these ...

Given the current price for a gallon of gas in Southern California ($4.55 as this goes to print!) and elsewhere in the good ol' US of A, there's no better time than now to make that old gas guzzling ...