Hello all, I'm looking to get some input on upgrading my hpop. I've owned my 2003 7.3 for about two years now and replaced one injector along with doing some other upgrades. The engine has about 236,000 miles on it (she's just gettin her legs) and I have no idea if the hpop has ever been changed. It looks like it's been on the engine a long time. When I start the truck in any outside temperature or if the engine is warm or cold, I get a lumpy idle for about 15 seconds and the it idles smooth. It's not a skip it just seems a little rough on start up. Has anyone else run across this condition with their 7.3? Also I've been eyeballing the Adrenaline hpop as a replacement. Anyone install one on their 7.3 and is it as good as it sounds? Thanks
before you start spending $600 plus all the labor on a HPOP I would hook it up to a monitor and check the readings for the following:
ICP sensor- what does it read during the rough idle vs when it smoothes out
IPR sensor- what does it read during cranking, idle, and full throttle
The IPR commands how much pressure the hpop creates is used for the engine. I.E. common for it to stick open or bad wire harness due to heat and oil causes all sorts of issues. The ICP relays the info to the pcm to use and dictate what the ecm demands. If your hpop is putting out good pressure but the ipr nut needs tightened, or sensor is failing it will never run right etc.
Also whats the injector readings?
also whats the Under the valve cover harness look like? if its the OEM most likely its not in the best condition and needs to be replaced... ONLY USE MOTORCRAFT for the sensors. you can Google many the folks who spent money/time twice to replace parts house with ford down the road.
Also what oil are you using? at 236k the original injectors are nearing the end of their performance life cycle. I.E. they work but not the best. You will notice a good improvement if you use a synthetic blend like the rotella t5 15w-40 or I settled with the new rotella t6 15w-40 full synthetic since it helped me so much at -25 here in winter. First time I ever use full synthetic and its really helped cold weather performance.
I would start researching for a monitor like an scangauge, edge insight or troq pro app and blue tooth to obdII adapter before throwing parts at it.