Coolant leak from block.

I have a 3.4l with a coolant leak coming from what seems to be the coolant drain for the block. Why would this be leaking and has anyone had this problem.

 

Bump.

 

they may have flushed the water system and it didn't seal well, just remove it and inspect the threads and bolt and add a little sealant to the threads when you put it back in.

you will just lose coolant so keep that in mind, I never try and save it because it never seams worth the effort when you see it in the bucket you don't want to reuse it as there is always trash that gets in it anyway so I just don't try and I add more when im done. probably better to add some new fresh antifreeze anyway.

 

Thanks. I'll check. What kind of sealant?

 

Teflon tape. 1 and 3/4 turns worth.