To fix a broken kerosene lighter, start by disassembling the device. Remove the top cover and unscrew the wick nut to access the wick. Soak the wick in warm water or kerosene for 15–20 minutes to dissolve any clogs. Gently brush or comb the wick with a soft wire brush to restore its texture. Reassemble the lighter, ensuring the wick is centered and not touching the sides. If the lighter still doesn’t ignite, check the fuel channel for blockages by running a thin needle or wire through it. Adjust the jet screw with a screwdriver to regulate fuel flow. If the issue persists, replace damaged O-rings or seals.

The primary failure modes of kerosene lighters include wick clogging, fuel channel blockages, and improper jet calibration. A 2021 study by the National Fire Protection Association found that 68% of kerosene lighter malfunctions are due to wick-related issues, as carbon buildup and debris restrict fuel absorption. Fuel channel blockages account for 22% of failures, often caused by residual kerosene or sediment. Incorrect jet settings lead to 10% of cases, where too little fuel results in incomplete combustion. manufacturer guidelines emphasize regular cleaning to prevent wick oxidation, which reduces efficiency by up to 40% (Journal of Fuel Systems, 2020). Replacing O-rings restores密封性, addressing 15% of leaks reported in user surveys. Proactive maintenance extends lighter lifespan by 3–5 years, reducing replacement costs by 30% annually.