How to Reset the Propane Regulator for a Gas Grill Open the cover lid on your gas barbecue and turn all burner dials to the OFF position. Disconnect the regulator from the propane tank shutoff valve by twisting the knurled mounting knob in a counterclockwise direction. Open the burner control knobs on the grill fully. Click to see full answer. In respect to this, how do you adjust a BBQ regulator? Adjust your BBQ pressure regulator for cooking heat. Locate your BBQ gas pressure regulator. Turn the LP gas tank handle all the way on and allow the gas to flow normally. Turn the burner all the way up to maximum, then begin to adjust the knob on the regulator by turning it down. Secondly, how do you clean a BBQ regulator? Mix 1/4 cup of dish soap and water in a bowl. The solution should contain an equal part of both. Reconnect the hose and brush all connections with this solution. This would include the connection between the regulator and tank, the regulator and hose, and the hose and grill. In this way, what happens when a gas regulator fails? In general, regulator failure would result in either too much or too little pressure downstream. If the regulator fails and allows too much gas to flow (a “failed-open” condition for the regulator), downstream pressure will increase. The relief valve will remain closed until pressure reaches its set point.Do LP regulators go bad?The industry norm is 15 years before a regulator needs replacement while some regulator manufacturers recommend replacement every 25 years. If any regulator has ever been under water, such as on an underground propane tank, it needs to be replaced immediately.