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1994.5 - 1997 7.3L Power Stroke Diesel  

94.5 7.3 will not start

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Old Oct 10, 2015 | 08:05 PM
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94.5 7.3 will not start
150k miles f250 7.3 1994.5
Im Stumped
It will crank but will not start
Glow plug relay and glow plugs are good
Oil level is fine on the dipstick
When cranking fuel will fill the fuel filter housing
Batteries are good

It does crank slow
We have not replaced the cps yet

Not sure what else I should check or be looking for.
 
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Old Oct 10, 2015 | 08:21 PM
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The only right way to diagnose a problem is by hooking up a compatible scanner, that way your not throwing parts at it and in the process you are saving money
 
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Old Oct 10, 2015 | 10:52 PM
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Are you getting smoke ?
 
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Old Oct 11, 2015 | 01:21 AM
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Sometimes it will puff a little white while cranking which I know means it's getting fuel
 
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Old Oct 11, 2015 | 01:27 AM
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And I do have a scanner that can read icp
Ipr
And stuff readings should I get while cranking?
 
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Old Oct 11, 2015 | 07:42 AM
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You stated that it is cranking slow, and the batteries are good, so the next question, how old is the starter? These engines need to spin over pretty fast to start. Are the battery cables good, and the connections clean and tight? Both pos. and neg. on both ends?
 
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Old Oct 11, 2015 | 12:08 PM
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Batteries and all connections are good and I know it's like 500rpm while cranking is needed for the intectors to open or somewhere around that number
 
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Old Oct 11, 2015 | 12:15 PM
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Icp should be @ 500psi while cranking
 
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Old Oct 11, 2015 | 02:30 PM
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That must have been where I got the 500 from but I do know it's has to have a certain rpm while cranking for it to start.
 
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Old Oct 11, 2015 | 06:27 PM
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Rpm should be above 200rpm I believe while crancking. Have you tryed to unplug the icp to see if it starts?
 
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Old Oct 11, 2015 | 07:14 PM
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IPR DC % & ICP pressure is more important than RPM . Battery voltage above 10.5
 
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Old Oct 12, 2015 | 04:10 PM
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Originally Posted by z31freakify
Rpm should be above 200rpm I believe while crancking. Have you tryed to unplug the icp to see if it starts?
Have bot tried that yet the icp is the one behind the hpop reservoir or near the hpop it's self?
 
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Old Oct 12, 2015 | 04:11 PM
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Originally Posted by Action4478
IPR DC % & ICP pressure is more important than RPM . Battery voltage above 10.5
What should the ipr and duty cycle be at while cranking
 
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Old Oct 12, 2015 | 04:14 PM
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Originally Posted by Meydawg51
Have bot tried that yet the icp is the one behind the hpop reservoir or near the hpop it's self?
ICP is on the driver's side cylinder head, up near the front.
 
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Old Oct 12, 2015 | 08:34 PM
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Originally Posted by madpogue
ICP is on the driver's side cylinder head, up near the front.
On the oil galley/rail?
 
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