spark plug wire routing diagram?

Hello, I have a couple of questions for you. First, our van has a slight miss while the engine is just idling, but when we take off from a stop sign or light the van runs great, no miss or nothing. I am beginning to think that it might just need me to change the spark plugs and spark plug wires (last change was in 2014). Would like to know what you think. Next question is, could you send me something showing the firing order of the engine (3.3L) and the spark plug wires routing. The repair manual I have only shows the number spark plug and spark plug wire, it does not show the other five spark plugs or the routing of the spark plug wires. Thank you, will be waiting to hear back from you.