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Old 06-02-2009, 06:57 PM
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Injection Control Pressure??

Ok well i was playing around with my pmt that i use for gauges....and i noticed this paramater that was call ICP. So i got out the book and this is the definition it gives or this:
Injection Control Pressure:
amount of pressure used to deliver fuel to the engine through the injectors.

Ok well my question is this....is this the same as a fuel pressure gauge?? and if so what should i be reading?? And 1 more thing....the display reads the ICP in KSI does anybody know what that amounts to in PSI??? Im kinda lost here??

Thanks again in advance guys any help would be great!
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Old 06-02-2009, 08:56 PM
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That gives you your HPO pressure, not fuel. KSI means PSI in thousands(I think), i.e. anywhere between 500 to 4000ish.
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Old 06-02-2009, 10:55 PM
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Quote:
Originally Posted by Vizsla View Post
That gives you your HPO pressure, not fuel. KSI means PSI in thousands(I think), i.e. anywhere between 500 to 4000ish.
ok this may sound stupid but...what the heck does HPO mean??? lol sry if its a dumb question but plz bear with me im still learning.
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Old 06-03-2009, 01:51 AM
wriott
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HPO is our High Pressure Oil. Your HPOP (High Pressure Oil Pump) pressurises the oil to fire the injectors
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Old 06-03-2009, 04:09 AM
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Quote:
Originally Posted by Vizsla View Post
That gives you your HPO pressure, not fuel. KSI means PSI in thousands(I think), i.e. anywhere between 500 to 4000ish.
4000 is also when it is regulated by the IPR.
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Old 06-03-2009, 06:06 AM
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Quote:
Originally Posted by tex25025 View Post
4000 is also when it is regulated by the IPR.
The IPR regulates the pressure at all psi. The pcm desires a certain psi, the ICP tells the computer what the psi is, and then the pressure is controlled by the IPR.
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Old 06-03-2009, 06:11 AM
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Quote:
Originally Posted by Vizsla View Post
The IPR regulates the pressure at all psi. The pcm desires a certain psi, the ICP tells the computer what the psi is, and then the pressure is controlled by the IPR.
That is true, but at 4000 psi is when the pressure release valve is open and that is housed within the IPR. That's what I was getting at.
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Old 06-03-2009, 07:47 PM
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Ok so my next question is.....
is 0.5 KSI at idle normal?? also is say 2.2-2.5 KSI at WOT normal?? and lastly is this somthing i really need to monitor?? or can i switch it back to the boost gauge?
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Old 06-03-2009, 07:58 PM
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Quote:
Originally Posted by BigRed05 View Post
Ok so my next question is.....
is 0.5 KSI at idle normal?? also is say 2.2-2.5 KSI at WOT normal??
I haven't looked at mine thru the DashDAQ so I couldn't tell you that.

Quote:
Originally Posted by BigRed05 View Post
and lastly is this somthing i really need to monitor?? or can i switch it back to the boost gauge?
It's not something that I would be worried about on a day to day basis, if you were trying to diagnose something then that would be a different story.

Also back to another question that you had, this isn't the same as fuel pressure, this is pressure when fuel goes thru the pintel, not fuel going to the injectors themselves. They are related, but it's not quite the same reading as regular fuel pressure and that would be something that is worth monitoring.
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Old 06-03-2009, 08:03 PM
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Well thats no good lol i got all excited thinking that it was a fuel gauge. I really want to monitor fuel pressure but i want to do it with my digital gauges....really dont want to add an analouge gauge guess i will just hav to figues somthing else out.
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