I wanna start by saying thanks to all that oust here, I'm new and have learned tons from you all.

I have a new to me 04 with just under 200k, I've replaced the FICM with a diesel tech Ron one, rip. Got a scan gauge and new batteries. Here's my issue, it seems to build oil pressure slowly then starts and dies right away. If I keep cranking and get on the go pedal it will idle up and run blowing out a puff of black smoke. Give a minute or two at high rpms and then let it idle around a thousand it runs great. Starts fine through out the day.

I drove it yesterday for 400 miles and hpop was solid all trip, 500-600 at idle and as high as 2900 when I buried the go pedal.

 

It should be at least 580 at idle.
Park the truck nose down and see if she starts easier tomorrow.

 

I was mistaken, once started it stays high 500's and above. Couldn't park I downhill last night because I live where it's flat. But two sets of cranks got her started. Will be gone for a week or so, but looking last night I think it has a non stock oil filter cap. Make any difference?

 

Yes it does. The taller filters possibly allow all the oil to drain back once the truck shuts off. That leaves the filter high and dry, makes the truck fill the bowl before firing off. Change the cap back and that will probably solve your issue. For filters use only MotorCraft/Racor and stock oil cap. Same for fuel filters, OEM.

You can buy filters on line at a discount, dieselfiltersonline.com
Walmart carries them as well, MotorCraft #FL2016

 

Thank you very much, I plan on having the dealer do the oil change but I will track down a cap.

 

yep... new OEM cap and filter, most likely your problem.

 

Thanks I hope it's that easy

 

Agree get the right cap

Hope it didn't kill the IPR

2900 ICP AT WOT is low and if it ran low on oil from incorrect cap it should misfire here and there

Use SGII TO check it

Get ICP,ICPV IPR% FICM FICMVP FICMLP ALT

 

If I'm not mistaken, your ICP psi reading should be 3915 psi at wide open throttle full load.

 

I will get scan gauge numbers for icp today, got the oil and filter changed yesterday at ford. It was an OEM cap but not filter. Went out this morning and same issue, fired right up and then died. Longer crank built pressure and fired and stayed running.

 

What are your IPR duty cycle and ICP psi numbers when driving under full load at wide open throttle?

 

ICP doesn't seem to get above 4.00? Maybe 50 on IPR

 

so do you now have the OEM cap and filter? The filter holds the the drain back valve closed, the wrong one allows it to stay open, returning the oil to the pan and not to the pump.

Are you tuned? That can trick the ICP/PCM into a lower reading than actual forcing the pump to make more, but show a lower reading.

 

HPOP numbers should be near 4kpsi/80% closed right? At WOT

 

2500rpm should be dead on at 40% and I think at or under 80% at full throttle. Anything above that is a leak.