My dad has a 1997 f350 powerstroke and the passenger bank does not seem to be contributing much if anything. I ohmed out the uvch and injectors along with the harness to the idm. From the idm plug through each injector back to the idm plug all read between 3.3-3.5ohms so the harness side appears to be good. While I had the valve covers off I checked the oil flow out of each injector and found the driver bank has strong oil flow out of all 4 injectors while the front 1 and 3 on the passenger side has weak oil flow and 5 and 7 have no oil flow. When I pull the plugs on the uvch (I have the 2 plug per harness version) the 2-4 and 6-8 plugs almost make the engine die while the 1-3 and 5-7 plugs have no noticeable difference when unplugged. The idm is also new on the truck. Any ideas of where next to look?