Ensure that the siphon hose is properly inserted into the gas tank. It should be inserted as far as possible without kinking or bending the hose.
If you are using a hand-operated siphon pump, make sure you create enough suction to start the flow of gas. This can be done by squeezing the pump bulb repeatedly until gas starts to flow through the hose.
Try using a different type of pump. There are several different types of pumps available, including electric pumps, battery-operated pumps, and manual pumps. Each type of pump has its own advantages and disadvantages, so it is important to choose one that is right for your needs.
If you are still unable to siphon gas from the vehicle, it is possible that there is a problem with the gas tank or the fuel system. In this case, it is best to consult with a professional mechanic.
Here are some additional tips for siphoning gas from a common passenger vehicle:
Use a clear hose so that you can see the gas flowing through the hose.
Place a container under the end of the hose to catch the gas.
Be careful not to spill any gas on the ground or on your clothing.
Keep a fire extinguisher nearby in case of an accident.