Opened fryer gas door and lit fryer, Pilot is good when in main flame the flame looks like a candle flame, low gas pressure. Could only check outgoing gas pressure and did not register a reading on the manometer. Fryers are connected to trailer wall and could not move fryer to be able to get to shut off for fryer. Only way to check incoming would be to shut down trailer. This appears to be a gas pressure problem. 7/11/18 Found that no tanks were connected to the trailer. Had some connected. Lit the fryer pilot. It was strong but when the burner valve opened there was hardly any gas to the burners and the pilot flame dropped down. The gas pressure was nose diving to 2 inches wc. There was no good line taps on the fryers so I put a line tap on a piece of equipment across the trailer. The inlet pressure was 12inches of wc. Checked the two burner range on the same side as the fryers and had. low gas pressure. Found the Ansul systems valve was partly closed. Pulled it open and the