I have a problem with my 98 JD 345. It started leaking fuel several weeks ago so I ordered a carb rebuild kit. Took off the hood and the metal guard to get to the carb and when I start it up it was spraying fuel out with pressure right on the exhaust. Thing is it wasn't spraying from the carb but some other thing that the fuel goes to first before going to the carb. What is this thing? Has anyone ever had this kind of issue before? I don't know where to even start.