How to judge the damage of the secondary intake valve of Laobaolai

How to judge the damage of the secondary intake valve of Laobaolai

1, put the dipstick in the throttle, and then take it out for inspection. If there is only some putty on the fuel gauge, there is no problem, but if there is oil, it proves that the waste gas valve has been damaged; 2. Start the engine, let it run at idle speed, then pump air and directly vacuum the diaphragm chamber of exhaust gas recirculation. Under normal circumstances, the engine will have unstable idle speed or flameout. The waste gas valve, also known as oil separator and pressure control valve, is installed between the compressor outlet and the condenser inlet to improve the heat transfer effect in the condenser and evaporator through separation.