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No start, weird issue

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Old Mar 29, 2009 | 12:27 PM
  #1  
79f-250custom's Avatar
79f-250custom
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From: Wisconsin
No start, weird issue

so i get in my truck the other day to fire it up. start cranking and it wouldnt start but,, while i was cranking it over it would start chugging like it wanted to start but as soon as i released the key it wouldnt fire. the next day i tryed again and it was fine it fired up like new.
but the past few days its been acting up again! same thing happens. it crank it and it sounds like its trying to run on 2 cyls and as soon as i stop cranking it stops wont even try to stay running. and every once and a while if i crank it long enough it will finnaly fire up.

i have lots of white smoke,
i have a tach reading,
the truck builds oil pressure,
the UVCWH are fine pulled off both sides,
glow plugs are new,

i have no idea whats up with the thing! any ides guys?
Mitch

1995 f-350 powerstroke 4door dually, edge chip 250k miles
 
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Old Mar 29, 2009 | 12:34 PM
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Welk49
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From: Osceola, IN
Had the same problem few weeks ago. I had tach movement, but tried a different CPS anyway and it fired right up.
 
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Old Mar 29, 2009 | 12:38 PM
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From: MICHIGAN
Sounds like a CPS even if you have a tach signal. If you have an extra one give it a try.
Check the tin nut on the back of the HPOP, the one that holds the IPR in place. Don't over tighten it....might strip the threads.
 
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Old Mar 29, 2009 | 12:47 PM
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79f-250custom's Avatar
79f-250custom
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Originally Posted by Cuda_jim
Sounds like a CPS even if you have a tach signal. If you have an extra one give it a try.
Check the tin nut on the back of the HPOP, the one that holds the IPR in place. Don't over tighten it....might strip the threads.
i do have a extra CPS in the glove box ill give that a try when the snow melts
but i am not 2 sure about this tin nut never herd of this before. can you give me a little more info on it?

thanks guys!
Mitch
 
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Old Mar 29, 2009 | 01:13 PM
  #5  
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tjbeggs
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From: Silver Lake Dunes, MI
Club FTE Silver Member

Sounds like GP issues to me. The GP's might be new but there is still a relay and wiring that could be an issue. Smoke makes me think the CPS is good.
 
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Old Mar 29, 2009 | 01:15 PM
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DRRXR
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From: Texas Coast
Heres a link to some info in addition to the IPR.
http://www.aeswave.com/images/Produc...20sample73.pdf
 
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Old Mar 29, 2009 | 01:16 PM
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79f-250custom
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From: Wisconsin
it was 60 degrees all the way down to 10. i know the truck would have started on that 60 degree day even if the glowplugs were not working.
and i know for sure **** it wouldnt have started when it was 10 if they were not working properly.
 
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