The sound of the small throttle of the two-stroke outboard is wrong.

There is too much dirt around the air inlet. The torque of the two-stroke outboard engine is large, and there are four groups of holes in the inner wall of the cylinder. The reason why the throttle sound is wrong is that there is too much carbon and dirt in the throttle and the surrounding air intake, and the cross-sectional area of the air passage changes, which makes the control unit unable to accurately control the idle intake, resulting in the mixture being too rich or too thin and abnormal combustion.