High fuel consumption heel throttle valve

The first problem is that the fuel consumption of scooters is relatively high, and the fuel consumption of the old GY6 engine like Haojue Yuexing is obviously higher. I can't help it. The actual comprehensive fuel consumption of such vehicles is generally close to or reaches about 3 liters per 100 kilometers, and some may even be more.

The second problem is that if there is such a "bang" sound only when the speed is about 40, all other speeds are normal, which may be a carburetor problem. At present, in order to meet the environmental protection standards, the fuel injection quantity of carburetor is limited and the oil needle is not adjustable, that is, the oil needle cannot be improved. You can remove the vacuum membrane throttle valve, remove the oil needle, add a thin pad (with this special maintenance part) under it, and slightly raise the oil needle, which can generally effectively improve this situation.