Inconsistent gas pressure can cause your pilot light to go out.
Old wall furnace pilot light.
Turn the gas control to pilot and hold it in while you light the flame with a match or a lighter.
If your old gas furnace has a standing pilot you can follow a standard procedure to relight the pilot light.
Recently i had to re light the pilot light on an older model wall heater and decided to capture it on video.
Keep the knob in for 20 seconds and then release it and turn it to the on position.
Old wall furnace pilot light.
A number of reasons can cause the wall furnace to not light including a damaged thermocouple a clogged pilot.
Do not attempt to do this at home in northern california pacific gas electric.
Direct vent wall furnace part 3280 or when such a standard is not applicable the standard for manufactured home installations ansi a 225 1 nfpa 501a mobile home standard can csa z240 mh do not light pilot lights perform service or make adjustments to appliances on the lp.
In this episode of repair and replace vance shows how to relight the pilot light in a standing pilot furnace.
Small weak flames indicate a lack of gas pressure while high flames are an indication of high pressure that could blow out the flame.