I just fixed a problem like that yesterday on my integra ls i was getting oil blow buy in my pcv system it was pushing oil into my throttlebody through my hose that goes to my intake pipe from the valve cover and past my pcv valve into my intake manifold.I did in with my pcv system by pulling the hoses off and capping off the intake and the intake manifold and getting two little ten dollar filters and putting them on my valve cover.Car runs a hell of alot better now.This could be the problem you have.Check and see if you have any oil in your intake pipe after the hose.