no spark from cap

With respect, it doesn't sound to me like you actually fixed the problem

What I mean is, the object of a tune-up is not to get the engine to run, especially with the help of jumper cables if that's what I understood. The object of a tuneup is to get the engine in "running tune" to replace bad parts, and to find any problems that are undermining what might well be "start at the touch of the key."