Finally a TRUE 2kw diesel heater....after receiving several that were not.Received the heater today and after connecting the fuel, electrical connections and exhaust I then primed the heater for about 20 seconds then switched it on.Runs great. Initially I had an air bubble in the fuel line and that caused some surging and a odd humming noise but once removed this heater ran like a champ. Quiet and smooth. Ran it for 3 hours and no problem. Great heater.One thing....it comes with a 12v 18.5-20 fuel pump and after searching for several days I cannot find this pump to order a replacement if and when i need it. Plenty 22ML pumps available but not one 18.5-20