I'm thinking it's injector o ring time... opinions? - Ford Powerstroke Diesel Forum
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Old 09-17-2013, 03:30 AM
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Cool I'm thinking it's injector o ring time... opinions?

I've been trying to diagnose a low icp pressure at wot.
At a idle with hot oil Icp is about 575 and Ipr is 11, 14 cold. The Icp will ramp up to almost 2800 psi with 45% Ipr until maybe 50% throttle. It then quickly drops to 1800 psi. It'll hold this all the way up and with my newly cleaned Ipr I can get to 90% duty cycle. That's on the 120 hp Dp tune.
The ex starts and runs great! Not seeing any oil in the fuel, just feels flat past half throttle. Fxr return should be keeping fuel pressure up but I've only checked at idle not load.
Any guesses? Looking for an excuse to upgrade the hpop!
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Old 09-17-2013, 04:05 AM
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Oops. This is a 2003. Wrong spot. How do i move it? Lol!
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