Car abnormal knocking fastens negligence
Do not take care to go out " important matter "
One, step on brake gently from time to tome " Zhi Zhi " abnormal knocking
2, car is when urgent apply the brake, appear " thump thump thumps " sound
3, car is in when quicken or climbing slope urgently, engine appears " should become when " abnormal knocking
4, door glass is rising when falling, litre fall
Slow or have slight " thorn " sound
