Compression - Test
只能使用油缸压缩测试来比较发动机的各个油缸。 如果一个或多个油缸的差值超过 350 kPa (51 psi)，则可能需要修理该油缸及其相关部件。
不应只使用压缩测试来确定发动机的状况。 还应进行其它测试来确定是否需要调整或更换部件。
进行压缩性能测试之前，先确保存在下列条件：
- 蓄电池状况良好。
- 蓄电池已完全充电。
- 起动马达工作正常。
- 阀门间隙设定值正确。
- 卸下所有的电热塞。
- 已断开供油。
Show/hide table
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| 图 1 | g01336217 |
典型实例 | |
- 从缸盖上的孔 (2) 卸下电热塞 (1) 。 关于拆卸电热塞 (1) 的正确步骤，请参阅拆解和组装, "电热塞 - 拆卸和安装"。
- 安装合适的仪表测量电热塞孔中的油缸压缩。
- 运行起动马达来拖动发动机。 记录压缩表上显示的最大压力。
- 对所有油缸重复步骤 1 至 3 的操作。
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