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1994.5 - 1997 7.3L Power Stroke Diesel  

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Old Jul 14, 2008 | 08:54 PM
  #16  
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Have a friend crank the engine and stand at the tail pipe. If it smells like fuel then it would seem your getting it but if your getting fuel it should be running.

Clear the codes again and crank. that 1280 will probably come back. If it does we are stuck until we have some way (scanner or manual gauge) to look at HPOP pressures.
 
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Old Jul 14, 2008 | 09:08 PM
  #17  
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From: Belair md
smells like raw diesel and you had idm error codes, check for melted uvc harness
 
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Old Jul 14, 2008 | 09:17 PM
  #18  
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i will pop a valve cover off tomarr after work and look and i will also grab a friend tomarr for tjs idea... what kind of guage do i need??? pressure wise and fitting wise??? anything else you can think of will help... and i am not gonna fool with it no more tonight... i have to work tomarr morning
 
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Old Jul 14, 2008 | 09:21 PM
  #19  
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if you can get ahol dof a good scanner it would be much easier, if not then you need a gauge capable of 4000 psi or more. i cant recall the exact size of the threads in the head but there are 3 plugs in each oil rail, pull one out and take it with you for the thread size. and remove the oil line to each head to get the size to block off the pump to isolate the heads
 
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Old Jul 14, 2008 | 09:35 PM
  #20  
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what pressures should i be seeing???
 
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Old Jul 14, 2008 | 09:37 PM
  #21  
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to start, from 0 then a quick climb above 450-500 or more. a cut ipr o-ring will typicly climb quick from 0 to 150-200 then level out slowly from there.
 
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Old Jul 15, 2008 | 10:50 AM
  #22  
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Just out of curiosity ,,did the nut on the IPR solonoid fall off?...

Or the plug came loose ?...
 
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Old Jul 15, 2008 | 10:53 AM
  #23  
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Originally Posted by Action4478
Just out of curiosity ,,did the nut on the IPR solonoid fall off?...

Or the plug came loose ?...
I knew there was something else easy to check I was forgetting!
 
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Old Jul 15, 2008 | 05:16 PM
  #24  
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what is the ipr and where is it located???
 
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Old Jul 15, 2008 | 05:17 PM
  #25  
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and by coons numbers what should i see while cranking??? 1500 or more???
 
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Old Jul 15, 2008 | 05:36 PM
  #26  
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IPR pic ...here...

Should have 4-500 to start 650 -700 at idle ...
 
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Old Jul 15, 2008 | 05:53 PM
  #27  
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it is showing 2500 while cranking is that good???
 
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Old Jul 15, 2008 | 06:36 PM
  #28  
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Originally Posted by powerstrokeddiesel
it is showing 2500 while cranking is that good???
Gauge or scanner?

Gauge yes thats good, Scanner its good but it also could be wrong (bad sensor/wiring/pcm) but it would point us toward the fuel supply in any case.
 
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Old Jul 15, 2008 | 06:39 PM
  #29  
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Originally Posted by tjbeggs
Gauge or scanner?

Gauge yes thats good, Scanner its good but it also could be wrong (bad sensor/wiring/pcm) but it would point us toward the fuel supply in any case.
IIRC If it is a scanner ,It could be a false reading,it is reporting what the PCM is asking for or expecting to see with a closed IPR ,,guage is more accurate....
 
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Old Jul 15, 2008 | 08:45 PM
  #30  
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i have never seen 2500 psi while cranking, many hpop's cant even make that wot. that has to be a bad wire or misread gauge
 
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