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    vanalstm's Avatar
    vanalstm Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Aug 25, 2010, 11:15 AM
    Pilot Light won't light after gas line pressure test
    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's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #2

    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's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #3

    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's Avatar
    vanalstm Posts: 2, Reputation: 1
    New Member
    		  
    #4

    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.
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