When I drive my car normal I have a slight hesitation. When I get on the gas its accelerates with no problems. I just put a MSD distributor and new injectors in and that did not help. I think I might have a collapsed lifter and I was wondering if that might cause it? When I pull my upper intake off there is oil on the gasket. Is that odd or normal? I don't really see where the oil could come from other than the pvc valve.