An engine relies on two things to run: spark and fuel. Sure, there are a million other things to consider when speaking of engine operation and power, but regardless of the type, size, or brand of ...

Weeks after issuing recalls for safety problems in some of its most popular cars, GM says it needs to fix defective fuel gauges that can give SUV drivers little or no warning their vehicle might run ...

For any engine to reach its maximum potential, the fuel must burn efficiently. Running rich or lean is not good for performance, and in extreme cases it can be catastrophic. A rich engine is likely to ...