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一辆捷达轿车在使用中突然出现消声器放炮和行驶无力现象,经判断为点火过迟。检查发动机时发现,传动齿带过松造成正时齿轮和齿
A Jetta sedan in the sudden emergence of muffler blasting and driving weakness, the judge judged the ignition too late. Check the engine and found that the drive gear too loose caused by the timing gear and teeth