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The only time a similar thing happened to me, it was the high side of the fuel pump (of course that won't set a CEL either). Start with the basics: Check oil level. inspect all valvecover connections, sniff the oil cap. If you can, check the fuel pressure at idle and at WOT with a liquid filled 0-100 psi gauge on the shraeder valve at the fuel regulator. Possibly you are losing High Pressure oil pressure with warm, thin oil. That could be due to lots of things from IPR O-rings, Injector O-ring(s), etc. Cheers!
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1997 F250 SC 4x4 (CA model), E4OD, 4.10 LS, Relocated Block Heater Plug, Mostly Stock
SOLD - 1994 F350 CC DRW 2WD, 5 Speed, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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