core plug AKA soft plug
 

When I got the car I was told I had to replace 1 of the soft plugs close o the starter, problem is i've never done this, how had is this going to be?

RE: core plug AKA soft plug
 

not enough info provided
car, year, model, engine, etc
...

RE: core plug AKA soft plug
 

OK, let me just say first off, i don't know sh*t when it comes to cars. That being said I know it is a 69 Cadillac convertible, I'm told it is the original engine. Sorry for the lack of info.

RE: core plug AKA soft plug
 

easy .. drain coolant 1st..

on those engines of past years, the hardest thing was getting access to the
soft plug, punching it out with a chisel and prying it out - dont damage the block.

clean out the seat for the plug, pop new plug in with proper bonding agent,
tap it slightly with soft hammer - i like leather hammer ..
sorry .. cant remember what the bonding agent was.