i recently purchased a 1995 bass tracker nitro it sat for seven years ipur it in the shop.iwas told it needed a new fuel pump and it was best to change the water pump so i did. well to make a long story short the orignal owner only had 56 hours on it me not even two . i picked it up friday night saterday morning it was in the water two miles later it died . this morning i took it back to the shop , i watch the as he removed the head from the pistons ,#3piston is shattered all around the piston what could have caused this