My bbq grill has some vents on the top of it you can turn to open while it's closed... should i leave them closed even when im cooking or should I open them?|||if the temp. inside is low and your food isnt cooking fast enough you open them...if everything is cooking fine they should be closed....i keep mine open all the time..it speeds the processs. good luck..|||open for hotter fire, closed for lower heat cooking and smoking..|||The grates are used to control the temperature inside the grill. Also you should have them open when you have just lit the grill.

火车采集器