一一台东方红-75型拖拉机,在作业时出现发动机熄火现象。初步检查,发现柴油细滤器中有空气。将空气排净再起动发动机,开始着火平稳,但工作一段时间后,发动机转速下降,出现喘气现象,接着发动机熄火。根据这一系列征候,怀疑是喷油嘴磨损严重所致。把喷油器回油管卸下,起动发动机,其工作熄火现象排除。经再检查,发现是发动机第四缸喷 One Dongfanghong -75 tractor, the engine flameout at work. Initial inspection revealed that there was air in the diesel fine filter. The exhaust air to start the engine and start the fire steady, but after a period of work, the engine speed decreased, there gas panting, then the engine flameout. According to this series of symptoms, it is suspected that the nozzle wear serious. Remove the fuel return pipe, start the engine, the work of extinguishing the phenomenon of extinguishing. After re-examination, it was found that the engine cylinder jet