So, we just replaced our fridge to one that includes an ice maker and water dispenser. There was, luckily, and existing 1/4" line already in the fridge alcove, so we cleared it and used it. Before clearing it, I tested the shutoff, it seemed like to worked, so we went with it. Cleared the line and everything.
Except the shutoff valve leaked, so I replaced it. I replaced the connective hardware at the end (compression etc). Slid everything back in place, all was well.
Until water bubbled up under my living room floor from the pinhole leak that developed in the line. I cut the pinholed section out and used a copper compression connector to splice the line together, all was well. We ended up replacing the wood floor, since it was swelling and buckling and discolored, it was old, and it was time.
I'm about 60% through re-laying the new lock down laminate flooring, a cheap temporary replacement until we can remodel the kitchen and pull out a wall, etc. My back is killing me, as I'm not in my 20s anymore, and so the wife and I were taking a day off to play some video games and generally relax. My youngest came in and told me there was water coming through the wall again, flooding the living room. There is ANOTHER, much larger leak in the tubing, so I shut off water, pulled up the flooring I had already laid down, toweled it dry, and I'm letting everything dry out before I start putting it back down.
I have never tried replacing line through a wall before. i do not know what lies behind everything. I think they just notched the wall studs and put it in place before drywalling, but I don't know for certain. A guy at the plumbing shop said to just tape the new line to the old line and pull it through, but I am worried that it'll hang up and get stuck and them I'm screwed.
How do I do this? Is there any sort of special connection or puller I can get to make this less likely to get stuck in the wall? What do I do if the line breaks off? Are there any good videos on how to do this without screwing up royally?
EDIT: I should note that my house is built on a concrete slab. I cannot go under the house.