If the new cap-n-rotor has aluminum for contact points, the van will run terrible in a matter of a few weeks. Only copper/brass cap-n-rotor contacts last and keep the engine running smooth....I believe this is now an injector, as the new Aluminum rotor, wires, plugs, oil change, pvc valve, have been changed.
Now that is true, the code could be a mis-fire based on the ignition wire routing. I had forgotten about that TSB fix.Also try swapping the injector location and see if the missfire follows to the other cylinder.
It seems there was also a TSB on plug wire location... stev should recall this.