Injection Control Pressure??

[BlueOx12]

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!

[Vizsla]

That gives you your HPO pressure, not fuel. KSI means PSI in thousands(I think), i.e. anywhere between 500 to 4000ish.

[BlueOx12]

Originally Posted by Vizsla

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.

HPO is our High Pressure Oil. Your HPOP (High Pressure Oil Pump) pressurises the oil to fire the injectors

[tex25025]

Originally Posted by Vizsla

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.

[Vizsla]

Originally Posted by tex25025

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.

[tex25025]

Originally Posted by Vizsla

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.

[BlueOx12]

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?

[tex25025]

Originally Posted by BigRed05

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.

Originally Posted by BigRed05

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.

[BlueOx12]

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.