1, the motorcycle runs normally at idle speed, but when idling, if the throttle line is opened, it will turn off quickly. What happened?

When a motorcycle runs behind a hot car, if the air door is pulled, the mixture will be too rich and turn off. However, if you drive with a large throttle, there will be more air entering, so generally it will only cause poor power and will not stall, but it will not work with a small throttle or idle speed, and it will stall because the mixture is too rich. This is a normal phenomenon. The damper is used for starting a cold car. When it is cold, it needs a thick mixture, and when it is hot, it needs more.

For the motorcycle piston carburetor with the displacement of 1 10, the adjustment direction of the mixing ratio screw is smooth and inclined. Generally, screw it clockwise to the end, and then screw it counterclockwise for one and a half turns before exiting.

If the valve clearance of motorcycle is too small, the valve will not be closed tightly, and the cylinder pressure will become lower, which will lead to the difficulties of cold start, unstable idle speed, easy flameout, poor power, increased fuel consumption and other adverse reactions, and even seriously wear the valve rocker arm and camshaft.