Another no ICP thread
Cargo Master
Joined: Sep 2015
Posts: 2,860
Likes: 365
if the reservoir keeps emptying that would be a good place to start. Several things can cause this , pretty sure there is a check valve ball on stock hpop but I think you said you have replaced the hpop with something else other than stock? Maybe some others will chime in on where the oil could be draining to.
Laughing Gas
Joined: Oct 2008
Posts: 1,106
Likes: 154
From: Kansas City KS
Disconnecting the icp causes the pcm to see a 2200 pressure. It doesn't actually have that pressure.
This may have already been said. Use only motorcraft sensors on your 7.3.
My vote is check valve for the hpop reservoir is allowing it to leak down.
Scan guage is fine to diagnose low icp. It plugs in and its easy. you need to know is will the hpo reservoir stay full overnight. And with icp plugged in will it build pressure to start.
This may have already been said. Use only motorcraft sensors on your 7.3.
My vote is check valve for the hpop reservoir is allowing it to leak down.
Scan guage is fine to diagnose low icp. It plugs in and its easy. you need to know is will the hpo reservoir stay full overnight. And with icp plugged in will it build pressure to start.
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More Turbo
Joined: Oct 2020
Posts: 546
Likes: 261
She started!!! I think it just had a LOT of air in the system. I’ll see if she starts tomorrow. Let it idle for 20-30 min, man what a smoke show and it ran like **** but that’s to be expected lol
Cargo Master
Joined: Sep 2015
Posts: 2,860
Likes: 365
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
Congrats. Whenever I have to open the hpo system I crank it till I get pressure on the gauge cluster, then give the starter a break, and repeat. If I don't get at least some chugging or clattering by 3rd time, I missed something and time to check my work.
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More Turbo
Joined: Oct 2020
Posts: 546
Likes: 261
Thanks guys, yep I will order a IPR from Riffraff and get that **** one out of there. I plan to test drive it today. My EGT stuff hasnt come in yet which has me a little worried, I hope I dont melt the thing down but I will drive it on a daily tune and avoid full throttle.
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More Turbo
Joined: Oct 2020
Posts: 546
Likes: 261
Took it for a test drive and it was all bad. Hit the throttle in park it will rev, under load it won’t do ****. It takes 5-10 seconds to make it move. Once I was moving it would die coming to a stop everytime.
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Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
Are you sure you have the proper tunes loaded for the injectors? If yes then we start where we always do, ICP, IPR DC%, fuel psi. So in gear the engine won't build rpm? Do you have any way to read your torque converter slip? Could it be locked up causing motor to lug on take off and die on stops.
Its Comin Right for us!
Joined: Feb 2005
Posts: 12,203
Likes: 2,657
From: GA
If i remember right you drove the truck quite a bit after you bought it. Some of it loaded, and one pretty good distances. What did the truck start doing when you first noticed issues?.
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More Turbo
Joined: Oct 2020
Posts: 546
Likes: 261
When it was stock, it was slow and sometimes idled like ****. It was tired and probably the 3 original 387k mile injectors were playing a role in that but I towed a 6k lb jeep on the 16ft flatbed over the sierras without issue.
The first issue I had was the no start. I threw parts at it knowing I wanted to upgrade anyways. I put a new IPR in it, nothing. Ordered a Stage 2 CNC Fab HPOP, nothing then I did a Melling LPOP and that fixed it. Then it started and ran again. Still didn't run great, but not horrible, it moved but slowly, I figured it was tired and its empty weight is 11k. Knowing it was tired and had a questionable history with the previous owner I went to do some mods and thats when I did the tear down, Cups, 180/30 FFD injectors T4 SXE364.5 glow plugs, 1023 PHP tunes etc. Now today the thing sucks and barely moves with throttle and smokes like a mother ****er
The first issue I had was the no start. I threw parts at it knowing I wanted to upgrade anyways. I put a new IPR in it, nothing. Ordered a Stage 2 CNC Fab HPOP, nothing then I did a Melling LPOP and that fixed it. Then it started and ran again. Still didn't run great, but not horrible, it moved but slowly, I figured it was tired and its empty weight is 11k. Knowing it was tired and had a questionable history with the previous owner I went to do some mods and thats when I did the tear down, Cups, 180/30 FFD injectors T4 SXE364.5 glow plugs, 1023 PHP tunes etc. Now today the thing sucks and barely moves with throttle and smokes like a mother ****er
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
When it was stock, it was slow and sometimes idled like ****. It was tired and probably the 3 original 387k mile injectors were playing a role in that but I towed a 6k lb jeep on the 16ft flatbed over the sierras without issue.
The first issue I had was the no start. I threw parts at it knowing I wanted to upgrade anyways. I put a new IPR in it, nothing. Ordered a Stage 2 CNC Fab HPOP, nothing then I did a Melling LPOP and that fixed it. Then it started and ran again. Still didn't run great, but not horrible, it moved but slowly, I figured it was tired and its empty weight is 11k. Knowing it was tired and had a questionable history with the previous owner I went to do some mods and thats when I did the tear down, Cups, 180/30 FFD injectors T4 SXE364.5 glow plugs, 1023 PHP tunes etc. Now today the thing sucks and barely moves with throttle and smokes like a mother ****er
The first issue I had was the no start. I threw parts at it knowing I wanted to upgrade anyways. I put a new IPR in it, nothing. Ordered a Stage 2 CNC Fab HPOP, nothing then I did a Melling LPOP and that fixed it. Then it started and ran again. Still didn't run great, but not horrible, it moved but slowly, I figured it was tired and its empty weight is 11k. Knowing it was tired and had a questionable history with the previous owner I went to do some mods and thats when I did the tear down, Cups, 180/30 FFD injectors T4 SXE364.5 glow plugs, 1023 PHP tunes etc. Now today the thing sucks and barely moves with throttle and smokes like a mother ****er
Thread Starter
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More Turbo
Joined: Oct 2020
Posts: 546
Likes: 261
I Spoke to 1023 diesel and they said to pull the chip, they want to determine where I should start, chip related or mechanical related. I told them without the chip it would be an OEM Split shot tune with single shot injectors and he said even with that it wouldnt run as bad as your describing if it is chip related so I will pull it and give it a try.
Cargo Master
Joined: Sep 2015
Posts: 2,860
Likes: 365
I Spoke to 1023 diesel and they said to pull the chip, they want to determine where I should start, chip related or mechanical related. I told them without the chip it would be an OEM Split shot tune with single shot injectors and he said even with that it wouldnt run as bad as your describing if it is chip related so I will pull it and give it a try.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
I Spoke to 1023 diesel and they said to pull the chip, they want to determine where I should start, chip related or mechanical related. I told them without the chip it would be an OEM Split shot tune with single shot injectors and he said even with that it wouldnt run as bad as your describing if it is chip related so I will pull it and give it a try.