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.
Specifically For Gas Water Heaters. 1  Check the Venting System - at least every three months, take a good look at your gas water heater's venting and air supply system. Check for obstructions and damage to the vent piping. 2  Check the Pilot Light - your pilot light acts as an ignition for the gas burner that heats your water.