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'02 7.3 HPOP issue? Oil leak/low power
Hi everyone, I'm new to this forum, but not new to diesel or the 7.3. I've searched the forums and articles, but haven't found a solution. I've probably missed it somewhere, but hoping for some insight or advice from those with more or similar experiences.
Not long, maybe a month or 2 after installing my DP Tuner, I noticed a change in performance. When first started, especially cold, until the engine gets close to normal operating temp, its lacking power and even if I stomp the go pedal, it takes its time and has a distinct (almost like a low pitch whine) sound under the hood. I switched gauges on the Insight monitor and found that the ICP was only about 1300-1400 with the IPR duty cycle at 22-24%. Once warmed up, it behaves normally and under throttle, and I'll see ICP in 2500-3000 range with IPR duty cycle around 34%.
Looking under the hood, I've got oil in the valley. I haven't pinned down the source yet, but its not the turbo pedestal. I don't see any oil on the HPOP lines connected to the pump or at the connection to the heads.
Any help or suggestions are greatly appreciated! Basic info and mods are in Sig.
'02 F-250 7.3 SC XLT
Mods- DP Tuner, Edge Insight digital gauge, 4" Turbo-back MBRP, 6637 Filter, AIH Delete, CCV, Donahoe Leveling Kit, X-Code Front Springs, 2" Blocks on rear and 315/75 R16 BFG A/Ts on 16x8s, OBA with viar and 5 gal tank with Grover firetruck air horns, Meyer 7.5' plow w/extensions and short v-box spreader, Atomic LED clearance lights and Whelen Vertex LEDs, Warn manual hubs, Hutch/Harpoon and Pre-Pump Filter, Coolant Bypass Filter