HELP Wont Start After IPR Reseal - Competition Diesel.Com

maxwedgehead · 06-02-2015, 06:22 PM

Got a 94.5 7.3, truck isn't mine. Truck had a no start condition when warm. Replaced IPR o-rings, reinstalled, cranked on it several times, no luck. Replaced CPS, still no start, ohmed the coil on the IPR 10.6 so thats with in spec. Even hit it off ether a couple times and still won't run on its own, thinking stuck IPR valve but not for sure. Would like some comments or thoughts on what to look at next. Truck previously had new injector orings and glow plugs installed also.

maxwedgehead · 06-02-2015, 10:02 PM

Cranking fuel psi is 50, unplugged icp and no change. Thinking IPR is shot?

Pvmt-Pndr · 06-03-2015, 10:36 AM

Sometimes after introducing air into the heui system it takes a good bit of cranking to get running again. Drive about 50 miles or so to get all the air back out

maxwedgehead · 06-03-2015, 10:44 AM

I've cranked on it way more than any other time I've ever pulled injectors on a 7.3, cranked on it this morning 5 times about 15-20 seconds a time

Pvmt-Pndr · 06-03-2015, 10:48 AM

That should have done it then. Have you checked to see if you have oil at the top of the hpop through the plug? Engine oil is full I'm guessing

SDS97_7.3 · 06-03-2015, 10:51 AM

Anyway to monitor ICP?

Pvmt-Pndr · 06-03-2015, 10:54 AM

I highly recommend the torque app for a 7.3 owner. $5 for the app and $10 for the dongle if you have a smart phone. Unlike our dodges you can monitor almost everything on a 7.3 with it

maxwedgehead · 06-03-2015, 12:18 PM

No don't have a way to see ICP. Also getting zero smoke while cranking.

Pvmt-Pndr · 06-03-2015, 12:28 PM

Drain the fuel bowl, pull the filter make sure it's getting fuel. Should take roughly 8-12 seconds to fill the bowl up with fuel.

cityredneck · 06-03-2015, 02:18 PM

You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust

SDS97_7.3 · 06-03-2015, 02:29 PM

Quote:

Originally Posted by cityredneck

You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust

This is why I was asking^. Also as said before check to see if theres oil in the HPOP through the plug on top. How many volts are the batteries putting out?

powerstroke95 · 06-03-2015, 02:34 PM

I had the same problem once. I had somehow broke the little tip off the needle inside the IPR. Still dont know how I managed to do that but I took the needle out of a spare IPR and it started right up.

maxwedgehead · 06-03-2015, 02:43 PM

Quote:

Originally Posted by cityredneck

You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust

unplugging the ICP should set a default and should fire if theres hpop pressure am i correct?

Quote:

Originally Posted by SDS97_7.3

This is why I was asking^. Also as said before check to see if theres oil in the HPOP through the plug on top. How many volts are the batteries putting out?

Hpop is full of oil, never leaked off over night, batteries are new, also have a charger on them helping it

Quote:

Originally Posted by powerstroke95

I had the same problem once. I had somehow broke the little tip off the needle inside the IPR. Still dont know how I managed to do that but I took the needle out of a spare IPR and it started right up.

Well I had someone turn the key off and on and could not hear the valve it self move with a stethoscope, currently looking for an ipr someone has to try that.

cityredneck · 06-03-2015, 02:49 PM

You can also manually energize the ipr by grounding one side and putting 12volts to the other. Unplugging it does default it but on a 7.3 i have had them where it still wont fire. Sounds like you need to try another ipr. Also make sure your pigtail connection going into the ipr is good. Its super common for those to go bad. You can get just the end at any ford dealer

SDS97_7.3 · 06-03-2015, 02:55 PM

Quote:

Originally Posted by maxwedgehead

unplugging the ICP should set a default and should fire if theres hpop pressure am i correct?

Hpop is full of oil, never leaked off over night, batteries are new, also have a charger on them helping it

Well I had someone turn the key off and on and could not hear the valve it self move with a stethoscope, currently looking for an ipr someone has to try that.

Yes, if you unplug the ICP sensor it does set it to a default that the PCM sees. Well not necessarily, if the IPR is bleeding off too much from the HPOP you might not be getting enough to fire off. Ok good to hear that you have oil. If you have a load tester, test the batteries with the charger off, and then load test them and see what the voltage is. If it's not seeing a certain voltage, the truck will not fire. I cant remember the exact number for the life of me at the moment

Pvmt-Pndr · 06-03-2015, 04:07 PM

Quote:

Originally Posted by cityredneck

You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust

You're thinking 6.0 psd, 7.3s don't have a ficm

For $15 you can monitor almost everything

RDPsmoker · 06-03-2015, 08:05 PM

Quote:

Originally Posted by Pvmt-Pndr

You're thinking 6.0 psd, 7.3s don't have a ficm

For $15 you can monitor almost everything

IDM close enough.....

06-02-2015, 06:22 PM	#1
maxwedgehead Name: maxwedgehead Title: Too Much Time Status: Here Join Date: Nov 2010 Location: West Plains, MO Member`s Gallery Posts: 850	HELP Wont Start After IPR Reseal Got a 94.5 7.3, truck isn't mine. Truck had a no start condition when warm. Replaced IPR o-rings, reinstalled, cranked on it several times, no luck. Replaced CPS, still no start, ohmed the coil on the IPR 10.6 so thats with in spec. Even hit it off ether a couple times and still won't run on its own, thinking stuck IPR valve but not for sure. Would like some comments or thoughts on what to look at next. Truck previously had new injector orings and glow plugs installed also. __________________ 15 Mega Cab Dually 03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71 08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc.. 2009 CCSB 6.7L

06-02-2015, 10:02 PM	#2
maxwedgehead Name: maxwedgehead Title: Too Much Time Status: Here Join Date: Nov 2010 Location: West Plains, MO Member`s Gallery Posts: 850	Cranking fuel psi is 50, unplugged icp and no change. Thinking IPR is shot? __________________ 15 Mega Cab Dually 03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71 08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc.. 2009 CCSB 6.7L

06-03-2015, 10:36 AM	#3
Pvmt-Pndr Name: Pvmt-Pndr Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2015 Location: MI Member`s Gallery Posts: 177	Sometimes after introducing air into the heui system it takes a good bit of cranking to get running again. Drive about 50 miles or so to get all the air back out __________________ 2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel

06-03-2015, 10:44 AM	#4
maxwedgehead Name: maxwedgehead Title: Too Much Time Status: Here Join Date: Nov 2010 Location: West Plains, MO Member`s Gallery Posts: 850	I've cranked on it way more than any other time I've ever pulled injectors on a 7.3, cranked on it this morning 5 times about 15-20 seconds a time __________________ 15 Mega Cab Dually 03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71 08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc.. 2009 CCSB 6.7L

06-03-2015, 10:48 AM	#5
Pvmt-Pndr Name: Pvmt-Pndr Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2015 Location: MI Member`s Gallery Posts: 177	That should have done it then. Have you checked to see if you have oil at the top of the hpop through the plug? Engine oil is full I'm guessing __________________ 2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel

06-03-2015, 10:51 AM	#6
SDS97_7.3 Name: SDS97_7.3 Title: Too Much Time Status: Not Here Join Date: Feb 2011 Location: Finksburg, MD Member`s Gallery Posts: 960	Anyway to monitor ICP? __________________ RIP Dex KCCO 2008 F350 CCLB KR, MPD, No Limit

06-03-2015, 10:54 AM	#7
Pvmt-Pndr Name: Pvmt-Pndr Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2015 Location: MI Member`s Gallery Posts: 177	I highly recommend the torque app for a 7.3 owner. $5 for the app and $10 for the dongle if you have a smart phone. Unlike our dodges you can monitor almost everything on a 7.3 with it __________________ 2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel

06-03-2015, 12:18 PM	#8
maxwedgehead Name: maxwedgehead Title: Too Much Time Status: Here Join Date: Nov 2010 Location: West Plains, MO Member`s Gallery Posts: 850	No don't have a way to see ICP. Also getting zero smoke while cranking. __________________ 15 Mega Cab Dually 03 RCSB 1500 12 valve 215 pump, built 47re, 5x18s, 4k gsk, sxe369, Fass 240, 7mm delivery valves, 11.71 08 RCSB 1500 06 CR built 48re, Compounds, 200% over, 12mm, Billet rod motor, etc.. 2009 CCSB 6.7L Last edited by maxwedgehead; 06-03-2015 at 12:19 PM.

06-03-2015, 12:28 PM	#9
Pvmt-Pndr Name: Pvmt-Pndr Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2015 Location: MI Member`s Gallery Posts: 177	Drain the fuel bowl, pull the filter make sure it's getting fuel. Should take roughly 8-12 seconds to fill the bowl up with fuel. __________________ 2007.5 Cummins, 4x4, RevMax 850, Locked 4:10s, ATP Tuned, Tater 67/67, AirDog 165, stockish fuel

06-03-2015, 02:18 PM	#10
cityredneck Name: cityredneck Title: Diesel Mechanic Status: Not Here Join Date: Sep 2009 Location: Blairsville, PA Member`s Gallery Posts: 393	You need to monitor icp with a scanner. If it doesnt see 500psi the ficm wont fire injectors which is why your not getting any smoke from the exhaust __________________ 05 Purple CCSB 5.9 Fastest to date 10.11 @ 137 HP Tuning by Gordon @ Innovative Exergy 150%, Industrial dual CP3's, Garrett GT4509R. Manual VB, Some nitrous and other goodies

06-03-2015, 02:34 PM	#12
powerstroke95 Name: powerstroke95 Title: Diesel Enthusiast Status: Not Here Join Date: Oct 2007 Location: INDIANA Member`s Gallery Posts: 140	I had the same problem once. I had somehow broke the little tip off the needle inside the IPR. Still dont know how I managed to do that but I took the needle out of a spare IPR and it started right up. __________________ 2001 and 1995 Ferds

06-03-2015, 02:49 PM	#14
cityredneck Name: cityredneck Title: Diesel Mechanic Status: Not Here Join Date: Sep 2009 Location: Blairsville, PA Member`s Gallery Posts: 393	You can also manually energize the ipr by grounding one side and putting 12volts to the other. Unplugging it does default it but on a 7.3 i have had them where it still wont fire. Sounds like you need to try another ipr. Also make sure your pigtail connection going into the ipr is good. Its super common for those to go bad. You can get just the end at any ford dealer __________________ 05 Purple CCSB 5.9 Fastest to date 10.11 @ 137 HP Tuning by Gordon @ Innovative Exergy 150%, Industrial dual CP3's, Garrett GT4509R. Manual VB, Some nitrous and other goodies