Tighten the clamping sleeve and the threaded sleeve of the pipe joint. If the oil is dirty and blocks the oil hole of the bushing, change the oil and clean or replace the oil filter. The sudden acceleration of the cold start of the engine caused the oil to have no time to lubricate the bushing.
After idling for a few minutes, the engine accelerates and the engine often makes an emergency stop. During starting and stopping, idle for several minutes, and then gradually increase or decrease the load. The black smoke emitted by supercharger is often related to lubrication. The clearance between the rotor shaft and the bushing is too large, and the oil seeps in. If the supercharger is overhauled and the bushing is replaced, the supercharger will emit black smoke, the speed will be low and the engine power will be insufficient.
? Material expansion: If this happens, the exhaust and bleeder valve of the supercharger should be overhauled, especially if the turbine or impeller is damaged, and the turbine or impeller should be replaced. If the diaphragm of the exhaust pressure relief valve is broken, replace the diaphragm; If the spring of the exhaust safety valve fails, replace the spring.
Check the intercooler. The high speed of supercharger and the increase of pressure ratio lead to rough operation of engine. After the engine was found to be running rough, the exhaust valve of the supercharger was overhauled to adjust the pre-tightening force of the spring.
Specifically, there are the following two points: the hose of the exhaust pressure relief valve is damaged. Replace the silicone tube and the blockage of the ventilation hole on the turbine shell side, and remove the dirt.