2005 f250, was running and had a couple sticking injectors, a tech looked at it and shut it off and wouldnt restart. i have checked the usual culprits. icp is ok, ficm ok, ficm sinc and cam/crk sync ok, when key on it sounds like only 1 injector is cycling. have 5 volt ref at icp and fan connector. kinda stuck need some ideas. also swapped ficm from another truck to verify its good. same issue. koeo test pass and network test pass.