Stephen Colbert.
I was watching The Colbert Report last night, and in a segment, The Truthmeister demonstrated siphoning gasoline (petrol for you Euro types). The only problem is he showed how to do it the wrong way. He started the siphon by sucking the initial gas down the hose. This is dangerous and wrong, and I'll explain how to do it properly.
Unless you like breathing and drinking gas plus whatever sediments have collected at the bottom of the tank, you do not ever suck on the hose. You bring a cloth with you as well as a hose. Insert hose into tank until you hit bottom. Lift the hose an inch or so. Now use the cloth the plug the opening to the tank by wrapping it around the hose, pushing it into the fill hole, and getting it as tight as you can, without crimping the hose's style or possibly even just the hose itself. Have your recieving tank ready at a lower altitude than the tank you're siphoning from. Hold the rag wrapped hose tightly over the fill hole with one hand, and hold the end of the hose up, ready to put it to your lips. Now, take a deep breath in, as much air as you can. Now, blow into the hose as hard as you can. This will pressurize the tank. It won't last, but it doesn't have to, physics tells us that the path of least resistance is how the pressure will be relieved. The path of least resistance is the hose, since you've now inserted the end into the recieving tank. The gas will start to flow, and you didn't just drink a couple onces to do it, and you weren't sucking fumes while getting those ounces to your mouth.
Edit: Pull the cloth out of the fill hole once the gas starts flowing. I meant to mention this originally, but forgot it seems. The reason for this is the same as the reason for putting it there in the first place. It creates a good enough seal to hold enough pressure to force the gas to flow, and it's consequently also a good enough seal to create a light vacuum that will stop the flow too.
Remember kids, smoking while doing this is not recommended.
I was watching The Colbert Report last night, and in a segment, The Truthmeister demonstrated siphoning gasoline (petrol for you Euro types). The only problem is he showed how to do it the wrong way. He started the siphon by sucking the initial gas down the hose. This is dangerous and wrong, and I'll explain how to do it properly.
Unless you like breathing and drinking gas plus whatever sediments have collected at the bottom of the tank, you do not ever suck on the hose. You bring a cloth with you as well as a hose. Insert hose into tank until you hit bottom. Lift the hose an inch or so. Now use the cloth the plug the opening to the tank by wrapping it around the hose, pushing it into the fill hole, and getting it as tight as you can, without crimping the hose's style or possibly even just the hose itself. Have your recieving tank ready at a lower altitude than the tank you're siphoning from. Hold the rag wrapped hose tightly over the fill hole with one hand, and hold the end of the hose up, ready to put it to your lips. Now, take a deep breath in, as much air as you can. Now, blow into the hose as hard as you can. This will pressurize the tank. It won't last, but it doesn't have to, physics tells us that the path of least resistance is how the pressure will be relieved. The path of least resistance is the hose, since you've now inserted the end into the recieving tank. The gas will start to flow, and you didn't just drink a couple onces to do it, and you weren't sucking fumes while getting those ounces to your mouth.
Edit: Pull the cloth out of the fill hole once the gas starts flowing. I meant to mention this originally, but forgot it seems. The reason for this is the same as the reason for putting it there in the first place. It creates a good enough seal to hold enough pressure to force the gas to flow, and it's consequently also a good enough seal to create a light vacuum that will stop the flow too.
Remember kids, smoking while doing this is not recommended.