Join Date: Nov 2010
Location: South Fayette/Pittsburgh PA
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Sounds like the high pressure pump could be on it's way out. This is more common on 03-04 than any other years. I'll typically watch the ICP waveform during the no start and sawtooth like fluctuations in the pressure while cranking indicate a pump that has failed. Also an air pressure check that results in oil gurgling through the oil filter housing is a indication of a bad pump.
As a preliminary inspection it never hurts to pull the IPR and and have a look, could very well be a damaged screen causing the problem too. I keep a good IPR on hand at all times, they can be difficult to isolate but it sounds like yours is moving when commanded.
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2015 F-250 XLT 6.7L
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Last edited by sinner6.0L; 01-01-2014 at 07:14 AM.