How to get air out of master and slave cylinder on 1993 Dodge W250

I replaced my master and slave cylinder three days ago and it didn't come with a new line so I just used the old one. I let it sit for 24 hours to try and get the air out but its still not completely bled and I'm not getting good pressure. what should I do now?

Asked by for the 1993 Dodge W250
you need a vaccuum bleeder to remove all the air. A shop should have this and the process is very simple.