The following reasons may be responsible for the spark on the gas cooker but its failure to ignite:
1. Gas pipeline blockage: impurities or grease in the gas pipeline may cause the gas pipeline blockage, making the gas unable to flow normally, thus affecting the ignition and combustion of the stove.
2. Gas valve failure: The gas valve may fail, causing the gas to fail to flow normally and thus cannot be ignited.
3. Spark plug damage: The spark plug is the core part of the igniter. If the spark plug is damaged or polluted, normal ignition will not be possible.
4. Flame sensor failure: The flame sensor is an important part of the gas stove, which can detect the existence of flame. If the flame sensor fails, it cannot be ignited normally.
5. Insufficient gas pressure: the gas stove needs a certain gas pressure to ignite normally. If the gas pressure is insufficient, it cannot be ignited.
In view of the above situations, the following measures can be taken:
1. Clean the gas pipeline: clean the gas pipeline regularly to avoid pipeline blockage.
2. Replace the gas valve: if the gas valve fails, it needs to be replaced in time.
3. Replace the spark plug: if the spark plug is damaged or polluted, it needs to be replaced.
4. Replace the flame sensor: if the flame sensor fails, it needs to be replaced.
5. Adjust the gas pressure: if the gas pressure is insufficient, it is necessary to adjust the gas pressure.