bad ICP,HPOP leak, or bad HPOP - Ford Powerstroke Diesel Forum
User Tag List

LinkBack Thread Tools Display Modes
post #1 of 2 Old 01-23-2009, 09:43 AM Thread Starter Fanatic
dill's Avatar
Join Date: Jan 2008
Location: Glasgow,MT
Posts: 118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
bad ICP,HPOP leak, or bad HPOP

I was playing with my live link again and noticed that my ICP pressure was lower than it has been. I used to be able to see 1000 PSI, but now it wouldn't go past 950. And I know that is low, it's been that way since i got it, but have been waiting to do everything when I take the truck apart and do studs. but it might be awhile. so is this a leak that would be easily fixed or is it even possible for it to leak that much? and I also thought the injectors don't fire until 500 PSI, but mine starts and idles at 210 PSI , or is that just the 7.3. ICP duty cycle goes from 17% at idle to 85% past half throttle and stays there. i don't think it is the sensor because it stays pretty consistant, and the truck runs, doesn't like to start once warm, but runs. Any wisdom on this?

2003 f250 lariat 6.0 auto cc sb 4x4
leveled, 20x12 chrome hostages, 305/55r20s, 5" stacks, SCT livewire, billet grilles, custom vgt / s475 compound, custom built headers, ported heads, 6.4 valves, Hamilton springs, reworked pistons, delta cam, Florida converter, custom built 5r110, painted frame, chrome metalflaked valve covers oil pan and drive shafts.
dill is offline  
Sponsored Links
post #2 of 2 Old 01-26-2009, 09:59 AM
Compression Ignition Addict
w_huisman's Avatar
Join Date: Dec 2007
Location: IA MN SD
Posts: 233
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I think 85% is wide open on the ICP. You shouldn't see that. A small leak is probably the cause. I'd initially suspect a seal at the top of a injector, but that's just a guess.

Take a look at this article. It might help get you started.. LINKDiesel Technician Society

06 F250 Lariat cc sb FX4
97kmiles, coolant filter
analog FP gauge + Edge Insight w/ EGT
strategy VXCF9H7
As of 1/5/12, one of MANY SATISFIED CUSTOMERS of Ed at
w_huisman is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome