Bad EGR, Fuel injector's, Coil pack? Where to start?
 

Hello everyone, I am new to your site and after browsing threads for a few days, I thought I would just outright ask the experts here their opinion on a problem we are having. We have a 97 Expedition Triton 4.6L 281CI V8 that just rolled over to 200,000 miles. We have babied this truck since day one and has never given us any major issues. I LOVE MY TRUCK. Moving on...So a few months ago she started stuttering and shaking upon acceleration so I had the codes read and was misfiring on a few cylinders. We had all spark plugs and boots/wires replaces and it was good for a while. Now it is doing it again so I had the codes read this morning. Now it is stating that #2 #4 #6 and #8 are misfiring with an EGR error and an 02 sensor (weak). My son says with that bank being out we need to replace coil pack, my other son says injectors, and I am saying I do not have the money right now to be chasing my tail on " it might be's". Does anyone have a suggestion or experience on where to start here, or should I just break the bank and take it to a shop?