Ulcers most commonly occur on the inside of the mouth but may also occur on the tongue and lips, or in association with more generalized conditions, such as cancer. Allergic reactions to food and other substances may cause inflammation, swelling, and development of mouth white patches.
Part 3 Relighting the Pilot Light. 1. Turn the gas valve to the Pilot setting and push down on it. Doing this starts the flow of gas into the tube that supplies the pilot light. If your water heaterâs gas valve does not push down, look for a red control button near the valve. Hold this button down.
Dirty thermocouple: If you can light your pilot light, but the water heater pilot keeps going out, there are many possible causes. One of them is a dirty thermocouple. When you have a problem with your water heater not lighting, look at your water heater pilot light. Inspect the thermocouple to determine if it is dirty.