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1巧用喷油器安装孔如果发动机有一个或多个汽缸的压缩力过低,可以从喷油器(或者火花塞)安装孔注入约5mL机油,然后摇转曲轴,再测量汽缸的压缩力。如果注入机油后,汽缸的压缩力普遍提高,但是仍然低于标准值,说明是气门密封不严或汽缸垫泄漏。如果相邻两个汽缸的压缩力明显偏低,说明汽缸垫在这2个汽缸之间被冲坏。另外,更换顶置式气门机构时,可以拆下喷油器(或者火花塞),然后转动曲轴,使活塞移动到上止点,找一根钩形铁件,从
1 Injector Mounting Holes If the engine has one or more cylinders that have low compressive forces, inject approximately 5 mL of oil from the injector (or spark plug) mounting hole and then crank the crankshaft to measure the compressive force of the cylinder. If the oil is injected, the cylinder compression generally increased, but still below the standard value, indicating that the valve is not tight or cylinder gasket leakage. If the compressive force of the two adjacent cylinders is obviously low, the cylinder pad is washed out between the two cylinders. In addition, replace the overhead valve mechanism, you can remove the injector (or spark plug), and then turn the crankshaft, the piston moves to the top dead center, to find a hook iron, from