故障现象一辆2010年3月生产的1.8 L手动挡福特福克斯轿车,行驶里程约为4万km,该车进厂时客户反映行驶在颠簸严重的路面和减速带时,轿车前面部位会出现清脆的“嘀嗒”一声异响,而且响声比较明显,但正常行驶时没有任何响声。故障诊断根据客户的描述与客户一起进行路试,在路试过程中发现客户所描述的异响声发出部位在右前轮。针对异响声音发出的部位和异响性质进行以下分析:一是根据发 Symptoms A March 2010 production of the 1.8 L manual Ford Focus sedan, mileage of about 40,000 km, the car into the plant when the customer reflected in the bumpy road and deceleration zone, the front of the car will appear crisp “Ticking” an abnormal sound, but the sound is more obvious, but no noise when driving normally. Fault diagnosis According to the customer’s description and road test with the customer, found in the road test process the customer described the sound of abnormal sound emitted in the front right wheel. For the abnormal sound of the site and the nature of the abnormal sound the following analysis: First, according to hair