It's the needle and seat that are attached to the float actually that is the problem. Take the bowl off, pull the pin that holds the float on, carefully pull it down, check the needle tip for deformation and debris. Take a qtip and place one end in a drill and run the qtip in and out of the seat where the needle sits till its clean. Make sure when it's all reassembled that the float site level when in it's up position. Also with it fully assembled you should be able to blow into the fuel inlet port and air should pass. But if you flip it over and simulate the float being lifted then you should not be able to blow into it. GL