I am trying to fix up a machine for my kid and need some help. I am getting fuel in the engine and exhaust after I shut down the machine for an extended period of time. I checked the floats twice and they are in good shape. Cleaned the needle and seats and went through the whole carb. Anyone have any thoughts? Thanks. MarkVTbound@Comcast.net Was wondering if anyone has had a problem with a cracked diaphram in the fuel pump and fuel getting to the engine through the pulse pipe?