Leaking HPO system
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Leaking HPO system
2003
F-350
200,xxx miles
Okay, so I have been having a lot of trouble with this cursed truck and can't seem to pin point the issue. The truck runs like a champ cold, but when driving at constant speed for a good distance the motor starts to hiccup. The motor hiccups so bad it shut off on me twice, both times on the freeway. It seems to only have this issue on freeway driving.
On cold start the truck starts right up. When motor is hot and I try to restart its a very hard start. During the hard start my ICP starts at 360ish, than gradually get's up to 500ish to start the truck. Could this be due to a leak in my HPO? Also, I am now seeing a small amount of oil drip on the passenger side of the Bell housing where the tranny meets the motor. Would this be due to a leaking HPO system? Faulty IPR sensor?
F-350
200,xxx miles
Okay, so I have been having a lot of trouble with this cursed truck and can't seem to pin point the issue. The truck runs like a champ cold, but when driving at constant speed for a good distance the motor starts to hiccup. The motor hiccups so bad it shut off on me twice, both times on the freeway. It seems to only have this issue on freeway driving.
On cold start the truck starts right up. When motor is hot and I try to restart its a very hard start. During the hard start my ICP starts at 360ish, than gradually get's up to 500ish to start the truck. Could this be due to a leak in my HPO? Also, I am now seeing a small amount of oil drip on the passenger side of the Bell housing where the tranny meets the motor. Would this be due to a leaking HPO system? Faulty IPR sensor?
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Junior User
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I'll drive the truck around tonight once traffic dies down and will start posting up values of IPR and ICP. Thanks for your input!
Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
Dont drive it anywhere therere are to many varibles when driving so all the numbers we have is a from a Parked truck
to properly test do this
OPERATING VALUES
Just make shure the numbers are taken exactly like this
Truck in PARK OR NEUTRAL all times during test
ECT at 190* or close to And EOT at 185* or higher
A/C OFF
----------------------------------------------------------------------------------
#1-------KOEO=Key On Engine Off =record value and POST IT!!
#2-------Low Idel (truck idel on its own)=record value and POST IT!!
#3-------High Idel (2500RPM)=record value and POST IT!!
Id check the ICP sensor like Cheezit says
Do you have OEM Oil Filter and OEM Cap?????
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Junior User
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I replaced the ICP and pig tail this weekend with OEM parts. took the truck back on the freeway sure enough motor started hiccuping and almost died out. I have OEM oil filter. When I got the truck it had a aftermarket oil cap. I have no idea how long it was running like that. Do you think I should check my IPR screen for damages. I think the prior owner was running OEM filter with taller cap.
The ICP pigtail was torn and had a little bit of oil on the pigtail and sensor. I'll make sure to get the temps up an take readings again. I'll also post cranking values of IPR and ICP once the truck is at temps. it takes awhile to start once hot, so I have more than enough time to write everything down while cranking.
The ICP pigtail was torn and had a little bit of oil on the pigtail and sensor. I'll make sure to get the temps up an take readings again. I'll also post cranking values of IPR and ICP once the truck is at temps. it takes awhile to start once hot, so I have more than enough time to write everything down while cranking.
Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
Post ICPV at KOEO
And from the sounds of it the IPR wpould be my next step pull it check the screen
And from the sounds of it the IPR wpould be my next step pull it check the screen
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long night
okay, so I took the truck out tonight and drove it like I stole it. Sure enough the truck started to hiccup two minutes into the drive.
ICV cold was at KOEO was .20
After driving a couple of blocks with the motor hiccuping the truck died out on me while coming to a stop. I tried to start the truck hard start/no start. I let the truck sit for about 15 minutes and after a 10 second crank the truck started.
ICP
KOEO - 30
Idle - 640
Cranking w/no start- 389ish
High Idle - 1458
IPR
KOEO - 14.6
Idle - 24.9
Cranking w/no start - 77.8
High idle - 39
ICV
KOEO warm - .20
Idle - .86
High Idle - .58
I should mention the truck die out on me when trying to perform high idle test for IPR. also the truck sounds horrible. sounds like it missing or not running on all 8 cylinders. kind of hard to explain, but does not sounds normal at all. Still no codes.
ICV cold was at KOEO was .20
After driving a couple of blocks with the motor hiccuping the truck died out on me while coming to a stop. I tried to start the truck hard start/no start. I let the truck sit for about 15 minutes and after a 10 second crank the truck started.
ICP
KOEO - 30
Idle - 640
Cranking w/no start- 389ish
High Idle - 1458
IPR
KOEO - 14.6
Idle - 24.9
Cranking w/no start - 77.8
High idle - 39
ICV
KOEO warm - .20
Idle - .86
High Idle - .58
I should mention the truck die out on me when trying to perform high idle test for IPR. also the truck sounds horrible. sounds like it missing or not running on all 8 cylinders. kind of hard to explain, but does not sounds normal at all. Still no codes.
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Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
okay, so I took the truck out tonight and drove it like I stole it. Sure enough the truck started to hiccup two minutes into the drive.
ICV cold was at KOEO was .20
After driving a couple of blocks with the motor hiccuping the truck died out on me while coming to a stop. I tried to start the truck hard start/no start. I let the truck sit for about 15 minutes and after a 10 second crank the truck started.
ICP
KOEO - 30
Idle - 640
Cranking w/no start- 389ish
High Idle - 1458
IPR
KOEO - 14.6
Idle - 24.9
Cranking w/no start - 77.8
High idle - 39
ICV
KOEO warm - .20
Idle - .86
High Idle - .58
I should mention the truck die out on me when trying to perform high idle test for IPR. also the truck sounds horrible. sounds like it missing or not running on all 8 cylinders. kind of hard to explain, but does not sounds normal at all. Still no codes.
ICV cold was at KOEO was .20
After driving a couple of blocks with the motor hiccuping the truck died out on me while coming to a stop. I tried to start the truck hard start/no start. I let the truck sit for about 15 minutes and after a 10 second crank the truck started.
ICP
KOEO - 30
Idle - 640
Cranking w/no start- 389ish
High Idle - 1458
IPR
KOEO - 14.6
Idle - 24.9
Cranking w/no start - 77.8
High idle - 39
ICV
KOEO warm - .20
Idle - .86
High Idle - .58
I should mention the truck die out on me when trying to perform high idle test for IPR. also the truck sounds horrible. sounds like it missing or not running on all 8 cylinders. kind of hard to explain, but does not sounds normal at all. Still no codes.
Numbers in Red are Bad
Looks Like HPO Problem for shure
Im with ya its bnot firing injecter hard enough so its not getting the fuel it needs
Do you have the Right Oil Filter CAP Now????
And common to kill IPR with the wrong Filter/Cap COMBO pull IPR and check screen for damage
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Junior User
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I have to correct OEM oil cap on there now. I'll go ahead and pull the IPR this weekend and check the screen. Hopefully, it's just a bad screen and not a leak in my HPO system. Thank for all your help. I'll keep you posted.
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After I pull the IPR and if the screen is okay my next step should be high pressure test on my HPO system? Or should I do a pressure test either way the IPR screen looks. I never heard about dead head testing pump, so time to do some more reading. Thanks!
Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
Well if the IPR Sc reen is Pushed up in or has a HOLE or Any damage to the Screen Replace it
and if IPR Looks Good Move to the Air test
Im not 100% shure how Cheezit Dead Heads the HPOP I have an Idea but not shure He will straighten us Out
I dont want to say the wrong thing and mess you up Cheezit Really Good about Checking in to help all us Out so Im shure he will come on today
and if IPR Looks Good Move to the Air test
Im not 100% shure how Cheezit Dead Heads the HPOP I have an Idea but not shure He will straighten us Out
I dont want to say the wrong thing and mess you up Cheezit Really Good about Checking in to help all us Out so Im shure he will come on today
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Okay, just trying to wrap my head around all this. I've been doing a lot of reading (at work) about deadhead test, etc.
As far as doing the deadhead test I found the following link to block off the high pressure lines. My question is where exactly do these plugs go? I'm guessing they connect to the high pressure stand pipes or pump discharge line.
If I'm only having this issue when the truck is hot, do you think this will work on a cold motor?
OTC ZTSE4576 ICP LEAK TEST PLUGS (NO. 10) for International
After some more research it looks like these are the fitting that would fit into the ICP port for the high pressure leak test.
OTC 6763 OTC6763 OTC TOOLS 6763 - Ford 6.0 HP High Pressure Fuel Rail Test Adapter
As far as doing the deadhead test I found the following link to block off the high pressure lines. My question is where exactly do these plugs go? I'm guessing they connect to the high pressure stand pipes or pump discharge line.
If I'm only having this issue when the truck is hot, do you think this will work on a cold motor?
OTC ZTSE4576 ICP LEAK TEST PLUGS (NO. 10) for International
After some more research it looks like these are the fitting that would fit into the ICP port for the high pressure leak test.
OTC 6763 OTC6763 OTC TOOLS 6763 - Ford 6.0 HP High Pressure Fuel Rail Test Adapter