Is there a way to change valve springs without tearing the motor down?? My car had no compression in one of the cylinders, so I took the valve cover off, and immediately, I could see the problem. It definitely has a broken valve spring. I am not a mechanic, in fact, I've never worked on a car before, but an argument with my mechanic has led me to do this much work on my own.. anyway, do I have to take the cam off? is there a tool for changing the spings this way?? Please help!!