The diagram for my 2004 Honda Accord EX (4Cyl) is not on the vehicle. I need a diagram

If u mean a engine diagram like the sticker located in the engine compartment u need to return to a honda dealer an they can order a new engine compartment sticker for u or try looking for a mitchell or chiltions manual for the car which can be found at most auto parts stores but call them first before u go u dont want to waste ur time driving there if they dont have one