Step 1: First find the leaking plug.This may be painfully obvious,or require pressure testing of the cooling system to locate.Remove the old plug.A hammer and punch will work .Place punch at side edge of the freeze lpug and apply hammer.

第一：首先找到漏气塞。这可能很容易也可能需要测试冷却系统气压来查找。找到后先□子抵住塞子边缘，再用锤子敲击。

Step 2:Yank the old plug out with a set of pliers. Even though this plug looked fine from the outside the damage is done.Rust is the reason why changing engine coolant according to schedule is a good idea.

第二：利用锤子和□子将塞子一边撬开后，使用老虎钳将旧馓子拽出。即使塞子外观状况良好，但内部已有损坏。定期更换发动机冷却液是防止生锈的良方。

Step 3:Clean the freeze plug mounting surface of any rust and crud with a bit of emery cloth.

第三：用砂布清理冻结的塞子安装面，去除全部的锈渍和污垢。