Originally Posted by Jbrew

Congrats 200,000 miles isn't nothing if it's been maintained. That's they need. BTW,- no coil pacs on that engine, the 5fours use COP systems. Coil pacs are a 4six thing...just so know, = BIG dif. Going thru it at those miles can make a night and day difference. You've got the most miles out of your fuel pump than I've ever heard off. With the factory pumps, 90,000 miles is average. Anyway @ 200K and if you haven't yet, -what helps most is purchasing a new set of the correct coils (Ford Spec = Motorcraft/Visteons) and updating the injectors. Just swap in new or freshly cleaned/rebuilt sonic cleaned 19's from a TRUSTED eBay seller. Good reputation is key with these parts and feedback will spill it all. Reason said, you can get GREAT parts like this cheep at that site, once you know how it works lol. Also the 02 sensors should be changed. AF sensors can be very important. Just like the PCV valve. You must run a Motorcraft PCV valve in these engines IF you want engine longevity, - very important as well. There's allot more, well not allot, just ask the forum when your thinking of updating or working on the truck, - great info to be had.