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Can't get Weber Genesis to burn above 250 degrees.

Posted on 6/26/26 at 8:46 am
Posted by prplhze2000
Parts Unknown
Member since Jan 2007
58444 posts
Posted on 6/26/26 at 8:46 am
I've switched out the tanks. It's only two years old. Any suggestions?
Posted by CatfishJohn
Member since Jun 2020
20995 posts
Posted on 6/26/26 at 8:49 am to
If you're getting the same weak flame in all burners it's got to be a leak somewhere between the tank and the grill in the gas line or connections.

That's my guess. Replace those parts.
Posted by DoctorO
BTR
Member since Jun 2010
295 posts
Posted on 6/26/26 at 8:53 am to
Safety switch. Make sure the lid is open when lighting the burners.
Posted by coldcoldcajun
Minnesnowta
Member since Sep 2010
194 posts
Posted on 6/26/26 at 9:45 am to
It's the regulator...that aluminum disc on the hose from the tank. I think I needed to disconnect the hose from the burner manifold and reconnect, but it's been a couple of years. There's a process you can find on Google/ YouTube.
Posted by SaltyMcKracker
Member since Sep 2011
2976 posts
Posted on 6/26/26 at 12:03 pm to
yep, vote regulator as well. Very slowly turn the gas on at the bottle, then try
Posted by commode
North Shore
Member since Dec 2012
1310 posts
Posted on 6/26/26 at 12:16 pm to
I have had luck lightly smacking it with a hammer.
Posted by Canon951
Member since May 2020
645 posts
Posted on 6/26/26 at 12:27 pm to
Another vote for the hose regulator.
Posted by GCTigahs
Member since Oct 2014
2563 posts
Posted on 6/26/26 at 3:23 pm to
When that happened on my Weber, I contacted customer service and they sent me a new regulator.
Posted by rustyjohnson
LP
Member since Oct 2009
443 posts
Posted on 6/26/26 at 5:43 pm to
As others have said, it’s the regulator, but might not need to be replaced. They have a safety feature built in. Google Weber regulator reset and try that before replacing.

If I don’t light mine in the right sequence it does this.
Posted by RoyalWe
Louisiana
Member since Mar 2018
5144 posts
Posted on 6/27/26 at 1:01 am to
If you have the valves at the grill open and then open the bottle valve then the regulator will sometimes not like it and give low gas flow. Close the bottle valve, close the grill valves, open the bottle valve, and then open the grill valves.
Posted by Commander Rabb
Member since Feb 2020
1347 posts
Posted on 6/27/26 at 10:24 pm to
Weber has fantastic customer service. Did you register it when you bought it? If you did and it’s only 2 years old they will take care of you. When I bought mine, the two doors in front didn’t line up. They replaced the whole thing no questions asked.
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