Look closely at the top burner igniter. You must get a brass brush (looks like a tooth brush) You gotta get the grease from around the igniter. Those burners will tend to get all stopped up. The gaskets underneith them wear out and gas slips from under the burner and that is the pop. You cannot get the gasket without ordering new burners(If somebody knows how I want to know) and if you remove the burner the gasket is gonna fall apart, you've been warned! To remove it you twist the burner a quarter turn And lift it up. This stove has some age on it. The ignitor wire is probably rusted to hell. You cannot buy the igniters seperately by the way BUT when you order them they will give a part number and the price is about 50 bucks(guessing). The thing you gonna get is the whole burner top with igniter(igniters are no longer sold seperately)and gasket.