Need a hose diagram for under the hood

My car is running rough I have changed the fuel pump, fuel filter, and I still do not think they were the problem to begin with. I cannot find a hose diagram for under the hood and I think that is where my problem is. Why do I think that? Because there was some that were dry and rotted and my old mechanic said he put them back together the best he knew how. So I believe that is my problem. Can anybody please help me with this? My family is down to this one vehicle and everything depends on this and I am not the even close to a mechanic. So far I am doing this by trial by error. So far so good with the pump and filter.