Torches that burn petroleum-based or other fuel need to be filled often. The easiest way to do this is with a medium-size funnel, which can help to keep oil in the canister and not dripping down the bamboo casing, which is a fire hazard. Don’t fill the canister all the way to the top: two-thirds full is recommended. Any more and you run the risk of spilling oil when you insert the wick or creating a top-heavy torch that can tip over. Also, be sure that the cap/wick is securely in place before lighting the torch. Finally, be sure that you only use the type of fuel recommended by your torch’s manufacturer. This should be explicitly stated on the documentation included with your torch.