Problem: When try to start engine, Go-Kart wants to lurch forward. In essence, Go-Kart will not idle. Wants to start directly into run mode.
Description: Go-Kart 5 years old. Well maintained and in good condition. Rode well for 5 minutes yesterday. Cut off engine to take a break. When try to restart, go-kart lurches forward and will not start. It appeared to me that the engine was trying to start directly in run mode (not idling). I propped up the frame to get the rear wheels off the ground and tried starting engine again. Starts fine but wheels are moving at medium speed. Checked the accelerator and it is not stuck and appears to be operating fine. Tried carburetor adjustment ... no dice. Removed Torque Converter Clutch. It looks OK, but I'm not a mechanic. Torque Converter Belt also appears to be in very good condition.
Question 1: Started engine without Torque Converter Clutch attached. Noted that the engine shaft is turning upon start. Should that be happening? (My naive common sense tells me that idle means idle. When engine started and not depressing accelerator, then shaft should not turn?).
Question 2: Given description of the problem, anyone with small engine experience want to opine as to whether the difficulty is with the engine ... or with the Torque Converter?
Thanks for the assistance.