View Full Version : Pilot Light won't light after gas line pressure test
vanalstm
Aug 25, 2010, 11:15 AM
I've emptied the gas lines before, and after turning the gas back on I was eventually able to re-light all my pilot lights, but this time I'm having no luck.
Does anyone know a good trick for that initial time you light your pilot lights after turning on the main gas line?
Thanks,
-Mark
hkstroud
Aug 25, 2010, 05:26 PM
You most likely have air trapped in the gas line.
You will have to open the gas line near the end, turn on the gas for a few minutes to let the gas push the air out.
A drip leg is often a good place to do this.
ballengerb1
Aug 25, 2010, 07:11 PM
Agree but be very careful. The area must be well vented and no fire anywhere in the house while purging the line, no spark either. Even a light switch can make a spark
vanalstm
Aug 26, 2010, 07:15 AM
Thank you both, I added a Gas Ball Valve just near the Water Heater, and then I openned all the windows in the basement and let the air/gas run until I could definitely smell the gas. I then closed the valve and reconnected it to the water heater. After waiting 10 minutes for the air to clear I was able to light the pilot light within a few tries.
Thanks again.