Phenomenon: the old Mercedes-Benz idle speed instability, 800-1800, the oil shows a while two kilograms, while three kilograms.
    Overhaul: the main oil regulator is a problem. Hydraulic regulator problems, the engine will be unstable, and 800-1800 this case is not only the oil regulator, there may be throttle open the size of the change. Need to go to a professional repair station to check whether the computer is faulty, in particular, check the oil pressure sensor is pressure relief.
    Phenomenon: Mercedes-Benz S320 driving, when the lift down when the feeling is more uncomfortable.
    Overhaul: There are many problems with the problem. If there is a "bang" sound, it is necessary to check whether the screw of the drive shaft is loose. If there is no looseness, check the oil quality, oil level, oil level and oil temperature. If these are the same, Are normal depends on whether the bottom of the oil box at the end of aluminum, in this case demolition of the demolition box, if there is no problem, it is recommended to check whether the computer program is chaotic, computer chaos to do a new match, still can not be determined as a computer internal damage , Need to be updated.
    Phenomenon: Mercedes-Benz 300SEL, cold car just started when the direction of the original feeling light, the temperature rose after feeling Shen.
    Overhaul: In this case, especially the cold car just started idling relatively high, this time turned slightly lighter. If the idle sink should be a pump to help the problem, help the oil may be relatively low, it is recommended to check the booster pump, in particular, check the help of tubing is not dirty.