Vacuum line replacement

How do I replace pre-molded vacuum lines on a 91 pontiac grand prix with a V6 3100 engine. I accidently cracked one while replacing my fuel injectors. Now my engine light is on and my acceleration is all messed up. Any suggestions appreciated.

you can cut the broken section out and use a small section of rubber hose that fits snugly over the remaining plastic line. Motormite offers that hard plastic line in a roll also, but if your section is premolded, that may or may not work.

I broke it right at the seam though, but thanks for the advice