Yamaha Georg Sanxin Car 1000 km

This situation is also the reason why the mixture is too thin. For a new car that has only run 65,438+0,000 kilometers, there will be no problem with the ignition system and cylinder compression. The carburetor version of the third car is realized by fine-tuning the carburetor+silencing catalyst+secondary air intake. The so-called fine carburetor is just to dilute the mixture a little. It is difficult to start the cold car and the refueling is not smooth. It has already had an impact when Euro II was implemented, and it is even more serious after National III. When Euro II was implemented, in order to solve this problem, many cars had to readjust their carburetors after they were sold, such as adding rich mixture or raising the position of throttle needle. Although this will affect the emission value, it solves the problem that the cold car cannot refuel. In order to meet the environmental standards, the throttle needle is not allowed to be adjusted, so there is no longer an adjustable position on the fuel needle of the carburetor.

At present, there are two ways to alleviate this problem: one is to extend the preheating time after starting, and the other is to thicken the mixture of carburetor, that is, to pull out the mixture screw from half rotation and try again. However, this will slightly increase fuel consumption, but it is not obvious and completely acceptable. In addition, it may also make the mixture rich when the car is hot, which may affect the combustion condition when the car is hot, and may make the spark plug black. Try it first. If it works, just wait until the weather is warm and then transfer it back.