Opening the hood of your Pontiac would expose a jumble of tubes, metals and wires. Among these parts is your Pontiac engine. It is a part of your internal combustion system that is responsible for burning gasoline in order to make your car move. It is considered to be the heart of your Pontiac car, because without it, your Pontiac would not be able to move an inch. There are different types of engines, and the most common of these are the 2-stroke engines and the 4-stroke engines. Automobiles are using 4-stroke engines because they have a larger capacity than 2-stroke engines. Four-stroke engines feature valves on top of the combustion chamber. The number of valves varies depending on the configurations of your car. That is why there are V-twin, V-5, V-6, and V-8 engines. The entire cycle of your Pontiac engine happens in four ways. First, it sucks a mixture of air and fuel. Second, the air fuel mixture is compressed. Third, it ignites the compressed mixture through the use of a spark plug. And lastly, it allows the combustion gases to force the piston back down.

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