i was having trouble idling,but the motor ran good at all othespeeds. found out it was sucking air by the tank connection. switched to another tank, found out it was the gas line connection. still idling rough and stall out though every once in a while. figured the plugs might be fouled because of the air leak and the extra oil from the oil injection system . plugs were fine . so i decided to decarbonize the motor . WOW what a difference idles a lot low and runs smoother now.