Throttle body dirty symptoms
    Symptoms: Mercedes-Benz W203 sedan throttle, driving about 20,000 km or so, due to air quality reasons, the closure valve will have a lot of dirt, when the dirt accumulated to a certain thickness, the engine will start when the car is not easy, after the car Idling abnormalities, driving off the flame and other phenomena, then the throttle on the need to clean up.
    Solution: After cleaning the throttle, set the standard with the original diagnostic instrument can meet the standard.
    Replace the spark plug
    Symptoms: After the spark plug performance deteriorated, when you drive driving will feel the engine power shortage, rapid acceleration of the car and accompanied by the exhaust pipe issued a "sudden, sudden" sound, idling engine jitter and so on.
    Solution: It is recommended that you drive the 111 straight 4 booster engine for 5 to 60,000 km each, the 112 V6 engine travels 7 to 9,000 km to the repair shop to check the spark plug and replace if necessary.
    Disassembly cleaning nozzle
    Symptom: After the nozzle is dirty, the engine will start difficult, power down, slow acceleration, idling shaking, black smoke, exhaust exceeded, serious engine will not start.
    Solution: Do not clean the nozzle, cleaning, but also the combustion chamber and the piston at the top of the coke washed away. It is recommended that the vehicle every 20,000 km to carry out a free cleaning, which can also avoid the accumulation of coke accumulation of the inlet system is too thick.
    Air flow meter failure phenomenon
    Symptom: The W203 sedan type 112 V6 engine is inhaled by the amount of air that is measured by a hot film air flow meter. Air flowmeters are particularly susceptible to damage due to their structural reasons. After the damage, the vehicle appears to accelerate the weak, black smoke, can not go to the highest speed, no idling and so on.
    Solution: It is advisable to clean the air condition in a timely manner or replace the air filter. Only keep the air into the engine often less dust, in order to extend the life of the air flow meter.
    Wheel alignment
    Symptoms: After four rounds of positioning inaccurate, the vehicle will feel heavy in the direction of turning, and return to bad, the tire will appear partial grinding phenomenon. According to the maintenance statistics Mercedes-Benz W210 chassis car driving about 80,000 km or so, the positioning value of more inaccurate.
    Solution: the above symptoms, must be promptly to the repair shop for four wheel positioning adjustment.
    Control arm abnormal sound
    Symptoms: the front wheel positioning and control arm on the control arm ball damage, will cause the positioning value inaccurate. And in the rugged road driving will be issued "slightly deng, slightly deng" sound. Directly affect the driving comfort and safety.
    Solution: As the ball, the buffer glue and the control arm is one, after the damage can only be replaced with the control arm. Driving in the Beijing area of ​​the W203 sedan, the general driving about 80,000 km or so more damage.