6.0 NO START sometimes 2005 EXCURSION - Ford Powerstroke Diesel Forum
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Old 03-28-2013, 07:32 AM
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6.0 NO START sometimes 2005 EXCURSION

I had posted last month about a problem that I had. In the last month it never happened again till yesterday.

The NO START condition was when the truck was hot (warmed up to op temp).

Had the issue again yesterday but was able to get it home luckily bc I did get it started on a long crank while at the Bank. (same place it happened the last time LOL)

Once I shut it down in the driveway it was NO START. I checked all I could reading my EDGE Insight CTS.

The cranking ICP was like 25PSI and got to about 50 when it cooled down to the low 100 degree range.

Once it was around 90 degrees she cranked up and started.

I warmed it up to operating temperature and shut down and again NO START!

So I got it figured out right? I dont know.

This morning I fired her up cold and warmed up to operating temperature shut her down and she fires right up. I even let it sit 10 minutes to let the oil drain (if it does???) and she is firing right up every time....

What you think????

Last edited by scenarioL113; 03-28-2013 at 07:37 AM.
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Old 03-28-2013, 07:46 AM
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My ICP sensor is clean and dry (front pass valve cover). Seems to be working bc truck starts when the correct PSI is reached.

When the NO START condition is happening the truck will continue to be a NO START even when I unplug the ICP sensor. I think that would tell me the ICP sensor is NOT the problem.

I am not sure about checking the IPR valve. I dont know much about checking that. I ordered the STC fitting upgrade kit and figure I would start with that.

Seems after a lot of forum searching the 2005 is a very common to have a failure at the STC fitting inside the HPOP.

I did notice some oil on the intake under the turbo. Not a lot but was wet and dripped down back of the engine. Not enough to drip on the driveway though.

Is there anything that could leak externally that could also give a HOT no start condition. Can the IPR let go and leak externally but still allow the engine to work like I described above.

I am pretty good with working on my own vehicle and hace done some work on this truck before but I am no tech by any means. I did an EGR delete and new oil cooler a few months back. Like a moron out of complete ignorance I did not replace the STC fitting while the top was all apart. At least I know how to take that stuff apart now I guess.....
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Old 03-28-2013, 07:58 AM
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What about battery voltage? My alternator will not ever read over 13.5 volts. That seems normal to me but sometimes I am only reading 12.8 12.9 idling.
I have been suspect of my batteries since the first time I had the problem.

Truck cranks fast but just wondering if a sensor could act funny if there was a bit of low voltage.

Can I test the CKS or CPS. Could one of those be acting up and causing an intermittent no start.

Right now I just shut it off and re started it 2 dozen times at 188 degrees and it fire up every time. A couple were cranks or 4 seconds but most were 2 second crank times.
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Old 03-28-2013, 08:02 AM
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I am using Mobil 1 5w40 Turbo diesel oil. I have about 4000 miles on the oil and I guess its been about 4 months since I changed the oil I dont do a lot of miles with the truck. I guess anything is suspect here. Oil looks clean (not like I changed it yesterday but you know pretty clean).

Just trying to feed as much info here
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Old 03-28-2013, 02:55 PM
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You have a high pressure oil leak. Could be STC, or it could be dummy plugs/standpipes. Do an air test to find out for sure.

Mike B
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Old 03-28-2013, 03:05 PM
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I am going to replace the STC fitting since I already ordered it. I should have it in a day or two. I pulled the HPOP and only took about an hour. Once I install the STC and put it back together I will check the PSI and see how it goes.

The IPR valve did not look clogged or damaged but I did take a few pics which I will post below.

6.0 NO START sometimes 2005 EXCURSION-image.jpg

6.0 NO START sometimes 2005 EXCURSION-photo.jpg


There is some specs of something on the screen. Can I blow it out with air or some kind of cleaner?
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