4 Methods to Siphon Gas from a Vehicle

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Certain situations may call for siphoning gas from a vehicle. Whether you decide to use a lawnmower, a generator, or simply replace the fuel pump of your car, the first step is to extract fuel from it. Gas tanks filled with ethanol gas frequently need siphoning, as such fuel is known to quickly go bad.

Siphoning gas from a car involves simple principles of physics. In most cases, air is sucked out of a pipe dipped in the tank, creating a vacuum. The gas then flows into the pipe to fill up the vacuum. It falls into the container from the pipe under the action of gravity. As fuel in the tank becomes lesser, it creates a new vacuum, which is filled up by air rushing inside from the tank opening. This air exerts pressure on the gasoline, making it continuously flow into the pipe, until the pipe is raised high enough to make gravity act in the reverse direction.

Siphoning gas from most modern cars is easier said than done. But, since it’s not impossible, there’s no need to lose heart. The various methods to siphon gas from both, older and modern cars, is given here.

Things Needed
Fuel-approved container
Transparent plastic hose or pipe
Cloth
Vacuum pump
Screwdriver/chopstick

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