What's Cool Top Rated Search Find automotive web sites across Canada. Many auto enthusiasts greet the warm weather of summer by taking their prized vehicles out of storage and cruising to car shows and show and shines. These cars usually have not been operated for many months, and they often run rough and perform poorly when first started. Anybody who has to start any gasoline powered device after it has been stored can have similar problems. This includes lawn mowers, roto-tillers, snowblowers, generators, as well as cars and trucks.
Gasoline is a very complex substance made up mainly of carbon and hydrogen atoms.
Not all the atoms are combined the same way. Some parts of the gasoline will evaporate very easily. We say these parts have a high volatility. Other parts of the gasoline evaporate much slower. When gasoline is stored in an unsealed container such as a carburetor or gas tanks on most collector cars, only some of the gasoline evaporates.