检查出油阀偶件七法（１）听声法打开柴油机减压手柄使柴油机减压，拉起油门使供油量最大，摇转曲轴，靠近气缸仔细倾听喷油声。如听到的是清脆的喷油声，表明出油阀偶件密封良好，若为断续的喷油声，则密封性差，应予更换。（２）停供法拆下高压油管，使油门处于停止供油... Check out the valve seven pieces of oil law (1) Listen to the sound method Open the decompression handle of the diesel engine decompression, pull up the throttle so that the maximum fuel supply, crankshaft, close to the cylinder carefully listen to the injection sound. If you hear the crisp sound of the injection, that the good seal of the oil valve, if intermittent injection sound, the seal is poor, should be replaced. (2) stop the method of removing high-pressure tubing, so that the throttle is stopped ...