Plain Jane OEM nothing to see here rebuild

[Pete_89T2]

Originally Posted by JustJeff

Rear 3 nipples on the UIM

1. Middle = IIRC is the larger and goes to the OMP injectors via the splitter. One of my nipples on that splitter broke. I have it plugged and get vacuum/pressure (not sure which) from a different source on either the UIM or LIM. But only for that one OMP injector.

On that larger middle nipple, you're correct that it is supposed to go to the 1-4 splitter, and from there to each OMP injector. If memory serves, that nipple is not vacuum, it's just an air bleed (pre-throttle plates). If the splitter is broke, just get yourself 3 "Y" or "T" style vacuum line fittings and use them to make a functional 1-4 splitter, and connect to each OMP injector. If that one OMP injector you have plumbed solo is getting vacuum instead of pre-throttle air, it may not work properly.