2003 6.0 wont start when hot. - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 01-10-2013, 02:52 PM Thread Starter
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2003 6.0 wont start when hot.

I have a 2003 F250 6.0 and I have been having an issue of no start after hot. when cold it fires up in mere seconds. It recently had a hpop replacement, icp & ipr replaced. It has new oil cooler, egr delete, coolant filter, blue spring.

I returned to the shop that did the hpop and the mechanic could not figure it out. He said ficm voltage was good, fuel pressure was good and hpo pressure was between 1200-1500 on "no start"/ He had it for a week and could not figure it out with the equipment that he had. He recommended I take it to a dealership. so I took it to a local dealership that I buy parts from (they price match Tousely) and they have almost had it for two weeks. They think it is hpo related. I need some direction on dealing with this dealership and this truck.
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post #2 of 11 Old 01-10-2013, 02:54 PM Thread Starter
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I forgot to mention that it will idle forever. However I was only able to drive it about 10 miles before it stumbled and shut off. No codes are showing up either. After it cools off it will restart.
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post #3 of 11 Old 01-10-2013, 03:56 PM
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Could be a bad ICP, if it's bad it can put IPR at wrong % and cause low power if opening up IPR too much.
Do you have ICP data, that is where I myself would start watch it as you go that and the IPR.


2006 F250 LARIAT CCSB 4X4: Edge CS2, ARP Studs, O-Ringed Heads, X4 PHP Custom Tune, Atlas40 Ficm Tune, CAT EC-1 Coolant, IPR Coolant filter, Fass-125, turbo-back SS 4" pipe, Corsa muffler, 6.4 Banjo's, 6.4 starter,DC Power 270 amp alt, 2/0 cables, Die Hard Platinum AGM, 7" lift w: Icon Progressive Coil Springs, 2008^ Carli/Deaver rear springs on fatty-daddy 38/15.50/18 Toyo's
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post #4 of 11 Old 01-11-2013, 01:49 PM Thread Starter
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When it is running it runs perfect.
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post #5 of 11 Old 01-11-2013, 02:54 PM
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Could be bad standpipes, or the stc fittings on the high pressure oil hoses that connect to the standpipes and oil rails.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #6 of 11 Old 01-12-2013, 07:10 PM
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Could be a weak HPOP, and or HPOP discharge tubes were known to rub HPOP cover causing leaks in the tube. Had this same issue myself, caused the same issues your experiencing. New HPOP didn't fix it so I replaced discharge tube, upgraded HPOP Cover and all is well.

Here's a pic of mine with the hole worn in the tube. https://www.dropbox.com/sh/ke62qgdxe...ics/Tube_2.jpg
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post #7 of 11 Old 01-19-2013, 04:01 PM Thread Starter
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Previous mechanic used wrong o-ring on hpop and/or old o-ring. The dealership mechanic showed me everything that was done wrong and took pictures for. I am certain when I get it back it will be done right. He is replacing all the o-rings and gaskets, and one standpipe.

Southend the 03 six-uhohs did not have the stc.
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post #8 of 11 Old 01-19-2013, 04:28 PM
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Re: 2003 6.0 wont start when hot.

Quote:
Originally Posted by SlimJim SC View Post
Previous mechanic used wrong o-ring on hpop and/or old o-ring. The dealership mechanic showed me everything that was done wrong and took pictures for. I am certain when I get it back it will be done right. He is replacing all the o-rings and gaskets, and one standpipe.

Southend the 03 six-uhohs did not have the stc.
There are stc, snap to connect, fittings on the high pressure hoses that connect to the oil rail and standpipes. Not that we hear about failures often, but they are there.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #9 of 11 Old 01-19-2013, 05:49 PM
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Wouldn't be the first time I heard of the wrong o-ring being on the discharge side of the HPOP. That's a good find. If that's all it was, you'll be up and running in no time.
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post #10 of 11 Old 01-21-2013, 04:44 PM Thread Starter
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Thanks Southbend for clearing that up. Truck is running now. Mechanic wants to wait to turn it over tomorrow. He wants to cold start in the morning.
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