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故障现象一辆解放牌6×4牵引车,搭载CA6DL2-35E3F柴油发动机。据驾驶人反映,该车在行驶中发动机突然发出“嘣嘣”的异响声。故障诊断接车后首先试车。起动发动机,在空气滤清器处能隐隐听到“嘣嘣”的异响;拆下空气滤清器盖,取出滤芯,异响变得明显。询问驾驶人行驶中发动机的动力是否不足,驾驶人反映发动机动力正常。经分析,初步推断故障可能出在气门上。拆下气门室罩,取出各缸气门推杆,发现第2缸排气门
Failure phenomenon A liberation of 6 × 4 tractor, equipped with CA6DL2-35E3F diesel engine. According to the driver reflected that the car suddenly sent in the engine “嘣 嘣 ” abnormal sound. Troubleshooting After the first test car. Start the engine, at the air filter can be faintly heard “嘣 嘣 ” abnormal sound; Remove the air filter cover, remove the filter, abnormal sound becomes obvious. Asked whether the driving force of the engine driving motor is insufficient, the driver reflects the engine power is normal. After analysis, the initial inference fault may be on the valve. Remove the valve chamber cover, remove the valve push rod of each cylinder and found the second cylinder exhaust valve