Considering you were boon docking it is likely your initial problem may have been a low battery issue. After taking it out and changing the nozzle it is very possible the igniters got bumped and are not gapped properly ( as it is a very specific gap) there should be a gapping tool on the side of the burner to set the igniters. Also when changing the nozzle it is good practice to tighten it down loosen it up tighten it back down in order to get a good deal between the nozzle stand and the nozzle. (Help the metals mesh together better.
Aqua Hot, Webasto, Oasis specialist -
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