I know this thread is pretty old, but I had a very similar issue. I apparently had a fuel leak on 2022 AT4 diesel for quite awhile. I noticed it when I changed my fuel filter, there was fuel residue on my tank and also on the inside of fender area. I cleaned up the area to try and pinpoint where the leak was coming. I ended up taking it into the dealer and got the run around for a couple days, then they called and said they found the leak. The metal portion of the spout before it goes into the hose had a crack in it. New part is supposed to be here today and hopefully installed.