Start with the basics first. Check the following:
Gas canister: Ensure it’s not empty. If it’s nearly empty, replace it with a new one.
Canister insertion: Make sure the canister is inserted correctly. The spray nozzle at the top must be properly aligned, and the space in the rim of the canister should be at the top so the locking mechanism can secure it.
Connection: Listen for a hissing sound when you attach the canister and open the gas flow by turning the knob, this confirms gas is flowing. If not, the canister may not be fully seated.
If the stove sparks but won’t ignite check the following:
Faulty ignition: Try lighting the stove manually with a match or lighter. If it lights, the ignition system may need cleaning or replacement.
Air in the system: If you’ve just connected a new canister, purge the air by opening the valve briefly before igniting.
If the flame is weak, it could be caused by:
Low gas pressure: Try a new canister
Wind interference: Position the stove in a sheltered spot
Extra tip: in cold weather, the cold canisters may not release gas properly. Warm the canister in your hands first.