I gotta give this one a bump ... who won stump the chumps?

 

Wonder if this guy ever had it fixed??

 

ya I would like to know If I was right or not.

 

This is a thread that I sure wish the OP would come back and give a final report!!

 

UPDATE:

https://www.ford-trucks.com/forums/1...ml#post9583579

 

You were 100% correct sir.... THANK YOU!

 

thanks for that update

 

This is my first post here and I thought I'd try to revive this thread because it sounds almost exactly like the issue I was having. The only difference is my 2003 would start-stall the first time, long crank no start once, long crank no start a second time, then start on the 4th crank and run great. It is typically parked nose up, and I've only ever had the issue when parked nose up. The only other symptom I've had was a no-start when hot issue that resulted in a tow.

The pertinent readings for the truck are: FICM always >47v, Sync good, ICP jumps to 2,000s at start then settles between 600 and 800 when idling, IPR settles between 25% and 30% at idle and never goes above 50% under hard acceleration, and temp delta averages about 10 degrees.

I was trying to save some money and avoid the 14 hours of labor, so I dug into her myself. I found nothing standing out as wrong, three O rings appeared overly compressed around the HPOP (the yellow HPOP base ring, the one between the pump cover and the discharge tube, and the one inside the discharge tube with a teflon ring). I replaced all of these, cleaned up the turbo, and put a BD EGR cooler on. As of last night she is back together and running well so far. This morning will tell if I fixed the problem...

 

Well update us if you would when you know.

 

Ok, it is a duplicate problem. Parked it nose up overnight, and it duplicated the symptoms. Parked it nose down the next night and it started with no hesitation. I'm not to worried about a cracked block, so what O ring are you referring to? Is it the yellow one at the base of the HPOP or another? I just want to make sure I check all the blocks before dropping a grand on an adrenaline HPOP.

Thank you,

Clay

 

Yes the yellow one. Under the pump.

 

I was looking back at the rest of this thread, and noticed your comment about pressure being slow to build. When I let it sit flat or nose down, it starts almost instantly (fast enough that I don't get a below 500psi reading before it starts). Does that influence your educated diagnosis, or does it still pinpoint that portion of the high pressure oil system?

Also I had one no-start hot issue that caused me to be towed. Do you think that was the same problem or another issue (like a no-sync situation)? I have thrown one code several months ago for cam/crankshaft position sensor, and I have not been able to duplicate the no-start. When I had it apart I inspected the wiring harness and cleaned/re-wrapped portions that looked oil soaked or abraded, thinking that it might be a separate problem.

Any thoughts?

Clay

 

Question for Cheezit. I have the exact symptoms of nose up start then stall and nose down starts right up. I have my truck a shop now and the monitored the high and low oil pressure and all are fine. My question is if the o-ring seal was bad or the pump seal would my oil pressures read good? Seems as if the o-ring was bad maybe but if the seal on the pump itself then no. By the way no hot start issues. Any light you can shed on this would be greatly appreciated.

 

I had the same sort of readings. My IPR and ICP were allreading fine, IPR was hanging out around 20-40% and ICP was 700-900psi at idlethan up to 3000psi under heavy acceleration. When I pulled mine apart I was hopingit wasn’t the pump and the O-ring was slightly compressed so I replaced it (anda few others)… Put her back together and had the same symptoms and same goodreadings when running, just like you. For me that means most likely somethingin the pump is leaking slowly. Bottom line here is I probably need a new pump,and the symptoms you are experiencing could be pump or O-ring but the only wayto find out is to dig in there…

 

Thanks for the response. With 185,000 miles on it, I'm thinking maybe I should replace the pump anyway. Don't want to throw money away but would hate to take it apart twice.