Our gas grill (Weber Q1200) all of a sudden would not light recently. I was troubleshooting the grill and almost convinced it was the grill valve. I decided to remove the quick disconnect fitting (where the regulator was removed) and the incoming line was completely clogged/blocked with a tan looking paste like material. After cleaning the blockage I am cooking on the grill again. I share this for the benefit of others who may experience gas flow problems.
i am not sure what might have caused this???