一台机动三轮修理后起动不着,装的是湖北广济产R175柴油机,在修理中更换了缸套、活塞、活塞环等零件。经检查,气门间隙、供油时间正常,摇转曲轴时能听到清脆的喷油声。拆下气缸盖后发现,原来是更换的新活塞是宜昌产的,比随车活塞短,当活塞到达上止点时,活塞顶至气缸体上平面还有一段距离。装上气缸垫后压缩终了的燃烧室容积就比原来大,所以起动十分困难。当重新换上湖北广济产柴油 After a motorized three-wheel repair is not installed, installed in Hubei Ji Zhichun R175 diesel engine, the replacement of the cylinder liner, piston, piston rings and other parts. After examination, the valve clearance, fuel supply time is normal, crank crankshaft can hear the crisp sound of the injection. Remove the cylinder head and found that the original is to replace the new Yichang production, shorter than the truck piston, when the piston reaches the top dead center, the top of the piston to the cylinder body plane still some distance. After the end of the cylinder cushion fitted compression chamber volume than the original big, so starting very difficult. When replaced by Hubei Guangji diesel