Freeze plugs have been known to fall out but not as commonly as them rusting out and leaking
![Yes Nod :yesnod:](https://board.marlincrawler.com/Smileys/marlin/yesnod.gif)
. They aren't expensive at all, merely pennies
![My Two Cents :twocents:](https://board.marlincrawler.com/Smileys/marlin/twocents.gif)
.
But replacing them can be a chore depending on it's location in the engine block. I would recommend replacing as many as practical, since if one failed others may be soon to follow. Good luck with replacing those.
![Fingers Crossed :crossed:](https://board.marlincrawler.com/Smileys/marlin/crossed.gif)