the small brake line burst on the rear of our 2006 Kia Spectra , I just replaced the line, once it is together ,do I need to bleed the other side.
Once it's together, you need to bleed the entire system, as air could have entered and affect the braking ability of the vehicle. Since it's a 2006, if you're like most people, the brake fluid has never been changed in it anyway. Doing a complete flush and bleeding at all four is not going to hurt anything. Get yourself a quart of DOT4 and have at it.