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Hey, ever since I got my xlt it had a bog on the top end. I thought maybe it was dirty carbs so I cleaned them. Still same bog. I ordered fuel pump diaphragm and fuel filter. The pick up line in the tank is brand new. I made sure the pulse line on the fuel pump was on tight so there is no leaks. My choke it very stiff I am wondering if it needs to be loosened off on the carbs. The plugs are black/ rich which lead me to believe the choke plungers are adjusted so they are pulled up a tad causing xtra fuel into cylinders. Maybe that’s why the choke is stiff?? I know it’s not clutches because I took the belt off and still had the bog plus somtimes it back fires meaning it’s fuel problem. Air/fuel screw on all 3 carbs are 1 turn out. Thanks
 
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