Had to install a gas shutoff valve on the back of a direct-vent gas fireplace (free-standing ornamental stove) to meet code but now the main burner seems to be acting strange. Sometimes it goes out or doesn't want to light. The pilot stays lit. I am wondering if some dirt or rust might have been knocked loose and is now clogging the internal workings. I tried to clean out the pipe with a Q-tip as I was installing the valve but maybe there was still a bit of dirt left inside. I'm not sure how I might be able to blow any such dirt out with compressed air? Ideas?
Thanks