Traffic jam throttle valve

You changed the spark plug and cleaned the throttle. First, check whether the pipeline and ignition coil of the high-pressure cylinder are damaged and whether the spark plug has too much carbon deposit. Second: check the gasoline pump: use the oil pressure gauge to measure whether there is pressure relief. Third: check whether the gasoline filter is too dirty or there is water leading to failure. Fourth: Check whether the air filter element is blocked. Fifth: check that the throttle is not round and the idle speed will be unstable. f