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.
Light the pilot burner. While holding down the pilot gas valve or the red button with one hand, you will use your other hand to quickly light the pilot. 1  If you have a new style water tank with a built-in ignition switch, press this button. 2  You should hear a clicking noise until the pilot burner lights.