Maintenance of pedal throttle valve

There may be many problems with two-stroke scooters. First, check whether the air filter and exhaust pipe are blocked to make it easier to discharge. If the air filter is too dirty, it can be cleaned or replaced. If it is replaced, it is necessary to pay attention to the appropriate filtration density. Whether the exhaust pipe is blocked can be judged by removing the exhaust pipe and driving, and at the same time, check whether there is more carbon deposit at the exhaust port of the cylinder. He carefully cleaned the carburetor, checked the oil level, whether the carburetor was aging, whether it leaked during installation, and whether other hoses related to the engine and carburetor leaked. Check whether the throttle can move up and down smoothly in the carburetor, and check whether the electronically controlled throttle of the carburetor is normal. Check whether the engine reed valve is not tightly closed, whether there is leakage, whether the crankshaft oil seal is leaking, whether the cylinder pressure is insufficient (cylinder pressure gauge is needed), and check the wear of the cylinder block, piston and piston ring. After the two-stroke pedal is old, it is easy to cause cold car and poor starting performance such as insufficient cylinder pressure, unstable idle speed, flameout and insufficient power. The exhaust pipe emits red liquid. If it is a water-cooled car, the cylinder gasket may be broken, but this situation should not happen on an air-cooled machine. You can check whether the burning oil is bad or there is water. This situation generally has little to do with spark plugs, but you can check it by the way.