It sounds like you are looking at these hoses where they connect to the tank. If there are just 2, obviously, they are the feed & return lines. If there are more, then at least two more are part of the recirculation system for the charcol cannister that holds fuel vapors. Then it is possible that it is one of these that you changed, and what you are looking now is a feed hose leeking. If this is not the case, then you may just have to crank the engine long enough to purge the feed line of any air that was introduced when you changed the hose.

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