It’s best to test your grill every time it’s used. Be especially attentive each time the propane cylinder is exchanged or refilled, and at the beginning of grill season or any time your grill’s gone unused for any lengthy period.
Testing your grill for a gas leak may sound dangerous and exciting, but the reality is that it’s less like a “Mission Impossible” and much easier than you’d think. In fact, all you need is a few minutes and a little dishsoap and water.
Testing should always be done outdoors, in a well-ventilated area.
The first step is to mix a 50/50 solution of water and liquid dish detergent. Put the mix in a dish or spray bottle. Next, turn all of the gas controls to OFF. Then turn ON the gas tank valve to help pressurize your system.
Now you’re ready to test for leaks. Spray or brush the soapy solution on the gas value, the hose and the regulator.
Stand back and take a look. Soap bubbles will instantly form and grow if there’s a gas leak in any of the components. No bubbles means NO leak. If bubbles DO form or you smell gas, turn your gas tank off right away. Consult your grill manual for how to replace or repair the damaged component.