Sam's NO START thread
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Post Fiend
Joined: Mar 2006
Posts: 7,841
Likes: 0
From: Vacaville, Ca
I replaced the IPR and that was not the problem. I pulled the valve covers to see if I have a high pressure oil leak in there but it all looks good. I am thinking the HPOP has gone south. What do you guys think?
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
Sam, if the IPR hasn't changed anything, unfortunately, you probably need an HPOP. Are you making sure the rez is staying full? With a full HPOP rez, it won't build more than 125?
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Post Fiend
Joined: Mar 2006
Posts: 7,841
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From: Vacaville, Ca
Darin, the oil gauge is installed in the ICP port at the moment.
Travis, I double checked the HPOP res afterwards and it is full. I had hoped that the res was low...LOL
Something else that I think is odd is that the heads don't have a lot of oil on them either. My small fords and chevys always made a mess with the covers off while cranking. I know the LPOP is not 60PSI, but I sure thought the heads would have more oil in them. IDK.
I guess I will replace the HPOP then. I want to pull the injectors to check them, but the fuel bowl is CLEAN! The crazy part is since I have it this far apart, I want to install stage 2's and a S366.
Travis, I double checked the HPOP res afterwards and it is full. I had hoped that the res was low...LOL
Something else that I think is odd is that the heads don't have a lot of oil on them either. My small fords and chevys always made a mess with the covers off while cranking. I know the LPOP is not 60PSI, but I sure thought the heads would have more oil in them. IDK.
I guess I will replace the HPOP then. I want to pull the injectors to check them, but the fuel bowl is CLEAN! The crazy part is since I have it this far apart, I want to install stage 2's and a S366.
Postmaster
Joined: Nov 2005
Posts: 3,168
Likes: 10
From: San Ramon Ca.
So just so I have this straight. There is a gauge of some sort in the ICP port. Was the ICP sensor disconnected from the wiring harness during your test?
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Post Fiend
Joined: Mar 2006
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From: Vacaville, Ca
I have a mechanical 5000 PSI gauge in the ICP port. I had it installed in the 3rd port on the passenger side head and only read 125PSI.
The ICP is not plugged in at all...should it be?
The ICP is not plugged in at all...should it be?
Fleet Owner
Joined: Aug 2004
Posts: 20,418
Likes: 197
From: AZ
The motor will run with the ICP disconnected. The PCM will default to a standard range of hpop pressures. I don't know why you couldn't at least test hpop psi there but it probably would be better in another port.
Mountain Pass
Joined: Aug 2006
Posts: 106
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You need to block off 1-head ck pressure. Then block off other head ck pressure so you can figure out what side is leaking. Have you checked pressure from HPOP with 1 of line blocked? (Hoses not connected to head)?