I just had the (original?) gas valve replaced on a "68" Lennox gas furnace. The technicians tried to connect the tubing to the Vent connection but it was the wrong size coupling. They then mumbled something and re-capped the Vent on the new valve. Is the Vent connection and tubing required or recommended for this old gas furnace? Thanks for any info!

Hi All. My furnace is having an intermittent ignition problem. I've actually been dealing with it for a few years now, but figured maybe this community could help me solve it so I can try to get a few more years out of her. I came across this old thread which basically describes my problem with 1 minor exception: [url]https://www.doityourself.com/forum/gas-oil-home-heating-furnaces/483278-carrier-weathermaker-gas-furnace-intermittent-ignition.html[/url] The exception is that when the furnace is in failure mode, I do not hear a click. I can then make the furnace ignite by wiggling the top wire that connects to the gas valve while the igniter is lit.. then it clicks and ignites. The problem has caused a few cold mornings, and I've come home to a cold house on occasion, but once the furnace is warmed up and running, it usually doesn't have any trouble staying on all day. Hoping for an easy fix, I re-terminated the wiggle wire, but the problem remains. This leads me to believe the problem lies with the gas valve module. Is the obvious solution simply to replace the gas valve? Or could it be something else (hopefully something simpler)? This will definitely test the my DIY limits significantly, so just want to make sure I'm not overlooking something obvious before I take on the challenge. Thanks to anyone willing to offer their opinions! [i]The white wire is the wiggle wire.[/i]