Buy links on this page go through our /go/ redirects to the manufacturer or retailer. We earn nothing from them today; that may change. Disclosure.
Quick answer
A Weber LP owner's manual says to leak test after assembly and every time you reconnect a tank. Brush or spray soapy water on the gas connections with the tank valve open and every burner knob off. Growing bubbles mean gas is escaping.
Hose or regulator damaged? Weber's kit (check the fits list for your grill):
Weber 7501 Hose and Regulator KitWeber's kit page says to check the fits info to choose the right part, and its support team (800-446-1071) can help.
What you need
Weber's manual says to mix about 20% liquid soap with 80% water, or use a leak check solution from the store. Never use a flame to check for leaks.
The three connections
- Knobs off. Make sure every burner knob is OFF, then open the tank valve.
- Wet each connection: where the regulator meets the tank (cylinder), where the regulator meets the hose, and where the hose meets the grill's valve.
- Watch for bubbles that grow.
- Rinse afterward. Weber says the solution may be slightly corrosive, so rinse the connections with water when you're done.
If you see bubbles
- At the tank: Weber's tank article says close the tank valve, disconnect the regulator and inspect the tank valve gasket, which should be perfectly round with no cracks or splits. Reconnect and test again. Still leaking? Try a second tank.
- At the regulator or the valve: Weber's manual says never tighten the regulator to stop it. Turn the gas off and contact Weber.
- Still leaking: Weber Customer Service is 1-800-446-1071 or support@weberstephen.com.
Weber also says to install the tank the way your manual shows. Mounting it another way can strain the hose and regulator connection and cause a leak.
Leak check first. Weber says do a leak test before anything else, never check for leaks with a flame, and never use a grill if a leak is present.
How we work: steps come from a Weber LP owner's manual and Weber's propane tank article. We don't test grills ourselves. Follow your own grill's manual. Sources are listed below.
Questions people ask
What do I use to leak test a grill?
A Weber LP manual says a mix of about 20% liquid soap and 80% water, or a store-bought leak check solution. Never use a flame.
Where do I check for leaks?
Where the regulator meets the tank, where the regulator meets the hose, and where the hose meets the grill's valve.
What if I see bubbles?
Weber says close the tank valve. At the tank, check the gasket, reconnect and retest, then try another tank. At the regulator or valve, don't tighten it; turn the gas off and contact Weber.
Sources
Last checked Oct 23, 2026. Details come from Weber's bypass and propane tank articles and a Weber LP owner's manual. Never use a grill with a gas leak.
