Coleman Grill Stove Trouble With Coleman Camping Grill?

Trouble with Coleman camping grill? - coleman grill stove

I have a Coleman camping grill that I bought a few years ago, I use a few times a year when the camp. I shot this year and will light the stove and started normally, but a few minutes on the stove until the gas from slow, I tried a couple of propane tanks and the same result. Ideas or quick fixes for me? Help would be appreciated