How to Change the Freeze Plug on a Buick 3.8 Engine
- 1). Position a punch at the outside edge of the freeze plug. Tap it with a hammer so that it rotates on its middle. When the edge of the plug clears the engine block, grip it with a pair of pliers and remove it from the engine block.
- 2). Wipe the inside of the hole with a small piece of emery cloth. Wipe forward with quick strokes to make sure nothing gets trapped inside the engine.
- 3). Coat the edges of the new freeze plug with a thin layer of shellac.
- 4). Set the freeze plug firmly into a seal driver. Push the seal driver against the hole in the engine block, then turn it counter-clockwise until the freeze plug is seated.