If a lighter fails to ignite, first check if the fuel tank is empty or nearly empty. Refill it with butane or gas if needed. Next, clean the ignition mechanism, such as the flint or spark wheel, using a soft cloth or specialized lighter cleaner. If the lighter is damaged or has a clogged nozzle, disassemble it carefully and remove obstructions. If these steps fail, replace the lighter.

Lighter malfunctions often stem from insufficient fuel or mechanical issues. According to a 2022 study by the National Fire Protection Association (NFPA), 60% of unlit lighters are caused by empty fuel tanks. Cleaning ignition components resolves 40% of cases, as debris or wear disrupts the spark. A 2021 Consumer Product Safety Commission survey found that 35% of users overlook fuel refill intervals, leading to operational failures. Physical damage accounts for 15% of issues, often requiring repair or replacement. Regular maintenance, including fuel checks and ignition cleaning, reduces故障率 by 70% (NFPA, 2022). Proactive steps like these align with industry safety guidelines and extend lighter lifespan by up to 500 uses (Consumer Reports, 2023).