5. Test Your Siphon
After you have completed the basic assembly, you can test the siphon with water or any other liquid.
Simply place a container with water above the bottle, and then put one end of the siphon tube into that water.
Next, squeeze the water bottle slightly as shown in the picture. When you do this, you should notice some air bubbles in the water container.
As you release your grip on the water bottle so that the sides are no longer squeezed in, enough suction should be created to start the initial flow of water.
At this point, it is important to unscrew the bottle cap to prevent a very slow trickle of water.
If you do not want to collect the fluid in the bottle, you can unscrew the lid altogether and transfer the siphon hose to another container.
As long as you keep the hose lower than the source of the liquid that is being transferred, everything should continue flowing freely.
Please note: You do not have to use a power cable if you have other similar options on hand. For example, PVC pipe or clear cheap tubing can be just as successful.
The main trick is to ensure that whatever you choose has some flexibility, is relatively small and is long enough to enable you to siphon gas from a vehicle into your container.
Photos and siphoning concept courtesy of essteeyou