Originally Posted by
cortrim1 jamanrr does have a point. I had this issue come up on some coilovers I sold. they were on my car and I had not noticed any problem with them. I parked the car and decided to part it out. I sold the coilovers and when the buyer put them on one of the rear struts was blown. I was pretty sure they were not blown when I removed them but I did not disassemble them and test the struts. the buyer disassembled the coilover in question and made a video of him pushing the strut in by hand and it not returning. So I sold a coilover setup with a blown strut. I refunded the amount it would cost to get a replacement strut and both sides were happy. This is just to show it can happen. If I was selling a motor it would have leak down and comp numbers to protect myself.
this happened to me as well, I sold a slightly smoking turbo (he was ok with a slight smoke), when the dude installed him the turbo smoked like mad, and while on my car it didnt do that.
It can happen but you need to man up and do something about it. I refunded the guy all his money, and gave him some extra bucks for the cost of the mechanic that installed my turbo. The guy understood and had no issues with me, since I apologized and tried to make things right. He even bought another things for me since he knows that I stand up for what I sell, and he has had no issues with those other parts
EDIT: I mean that the guy who sold the engine to wolf needs to man up not you