Old cars, new cars, stock cars, and modded cars can all suffer from engine vapor lock. We explain this mysterious term and tell you what can be done about it. If you've ever heard the term "vapor lock ...

For gasoline to be burned in a Pontiac engine, three things need to occur. It must be atomized (broken into small particles), emulsified (mixed with air), and vaporized (changed into a rarefied form).