I have a 05 suzuki ltz250. I was riding the other day and it stated cutting out at small throttle openings, full throttle it runs fine. I figured one of the jets were clogged. Pulled the carb and sure enough their was. I cleaned it, put it back together and the same thing happened. I ordered a rebuild kit and no difference. It wont idle and if the throttle is just off idle, it skips and sputters but will rev clean at full throttle.
What I have done so far, replaced the gas and cleaned the tank, replaced the fuel line and filter, disassembled the carb 4 times cleaning and rebuilding it, cleaned the air filter and changed the spark plug and none made any difference.