1台江苏-504型拖拉机平时运转正常,但在熄火后隔一段时间再启动较困难,特别是第二天启动更困难。检查气路与油路均正常,压缩情况也良好,启动副喷孔未堵塞;检查各缸喷油嘴,其技术状态良好,但在启动时仔细察看排气管工作情况时,发现一股股水珠从排气管喷出。从故障现象分析,初步判断为冷却水漏入气缸。检查油底壳无漏水 A Jiangsu -504 tractor usually works normally, but it is more difficult to restart after a period of stalling, especially the next day it is more difficult to start. Check the gas and oil are normal, the compression is good, start the secondary nozzle hole is not blocked; check each cylinder nozzle, the technical condition is good, but carefully look at the start of the exhaust pipe work, found a Unit Drops from the exhaust pipe. From the phenomenon of failure, initially judged as leakage of cooling water into the cylinder. Check the oil sump no leakage