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1994.5 - 1997 7.3L Power Stroke Diesel  

Very hard start, and Missing!!

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Old Mar 22, 2008 | 01:04 PM
  #31  
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From: Belair md
did anybody check to see if the glow plugs are lighting? if its smoking while cranking then the injectors are definatly firing. its possible to still have a high pressure system leak but a code would be stored if that was the case. a scan tool would be able to tell you right away if a pressure issue is to blame. then you can go about isolating the heads. you dont even have to make a gauge to check pressure at the heads, a simple plug for each oil line from the pump will do fine, just isolating each head will tell you if there is a leak in the head or not. the only reason to check the pressure is if you suspect a damged pump or ipr.

most independent repair shops wont charge more than 40 or 50 bucks for a simple diag, pull codes and give it a look over, unless its really involved it shouldnt cost much to diag, if it is going to be involved then you can always go from there.


and roger 922, the ulsd will not cause your fuel system to fall apart,
 
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Old Mar 22, 2008 | 01:08 PM
  #32  
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Joe GP's wouldn't cause the lose of power and wot only getting 25 mph. It might keep it from starting but not the only problem.
 
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Old Mar 22, 2008 | 01:10 PM
  #33  
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From: Belair md
i agree, but that seems to have been overlooked by the suggestions board, just throwing it out there.

have we checked the ipr for the nut falling off yet? i still cant see why it would be smoking if there is no high pressure oil. No oil=no fuel
 
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Old Mar 22, 2008 | 01:35 PM
  #34  
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I think I can get a scanner from a friend.
 
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Old Mar 22, 2008 | 01:45 PM
  #35  
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From: Belair md
that would be great, hopefully it has live pid data
 
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Old Mar 22, 2008 | 01:49 PM
  #36  
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Originally Posted by alstieg
I think I can get a scanner from a friend.
A scanner will definately help ...


I you do have an ICP issue , it won't tell you where the problem is ,,,

did you look at the oil spouts & injectors while cranking yet ?....
 
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Old Mar 22, 2008 | 01:51 PM
  #37  
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From: Belair md
it will tell you if its an icp issue and if it reads pid data it can point you to the area of concern. we need to get any codes and we need to see ipr duty cycle while cranking and icp while cranking
 
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Old Mar 22, 2008 | 02:06 PM
  #38  
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Originally Posted by c00nhunterjoe
it will tell you if its an icp issue and if it reads pid data it can point you to the area of concern. we need to get any codes and we need to see ipr duty cycle while cranking and icp while cranking
I know what it will do ,,, scanner cant tell one head from another in a low ICP problem ,,, I was thinking ,, low on power ,, no cel (reported to us )..Injector O ring or two ,,,Maybe poppet valve ...

Only takes time to figure these out ..

Since he didn't have a scanner & he already had the covers off ...

Take a look ...cheap test....

Plus ,,it was a gallon low on oil
 
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Old Mar 22, 2008 | 02:22 PM
  #39  
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From: Belair md
right, so if he can get the scanner and there is a high duty cycle he can block the heads off and see if it starts, its most likely going to be an ipr or o-ring issue

the gallon low could be anything from lack of maintance to plugged airfilter...and are the covers still off or did he put them back on? i do think cranking over and looking for oil is a good start
 
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