If you’re using a gas grill, it’s important to clean the venturi tubes regularly. This will help keep your grill running smoothly and prevent any problems down the road. To clean the venturi tubes, start by unscrewing the grill cover. Then remove the two screws that hold the tube in place. Be sure to free all of the tube material from around the screwholes. Next, use a vacuum cleaner to suck all of the tube material out of the screwholes. Be sure to dry everything off before reassembling the grill cover.