Ok, piston slap goes away when the car is warm right? The car is at normal operating temperature. I was jumping a car earlier today and it was doing this and the person I helped made the comment "Sounds like you have bigger problems than I do."
So the car is hot and its making this noise. Its intermittent. When I am driving sometimes I can hear it hammering away and other times, its totally quiet. I can open the hood sometimes and it sounds like a new motor. Other times, it sounds awful like this.
So would you just keep driving it? At what point is it just going to come apart?