Base oil pressure issues
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Base oil pressure issues
I have a 2004 6.0 that I had a long block built for and I cant get base oil pressure. If you crank it without starting it it will build over 70psi of pressure if you start it it wont built any pressure at all. I am at a loss and everyone I have talked to is also any help would be appreciated!
Hotshot
Joined: Apr 2010
Posts: 19,060
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From: Saratoga Springs,UT
A high pressure problem can cause low pressure oil problem
Pull the IPR for inspection
Does the oil filter house Fill up while cranking might need to hold thedrain close during thetest
When you get the 70psi are you cranking withkey off using thewire
Pull the IPR for inspection
Does the oil filter house Fill up while cranking might need to hold thedrain close during thetest
When you get the 70psi are you cranking withkey off using thewire
Fleet Owner
Joined: Nov 2003
Posts: 27,897
Likes: 3,615
Why not put all those things that you have done (and are trickling in on the 4 different forums) in the very first post? It would help in the troubleshooting. This way it is just a string of information slowly being communicated. Frustrating IMO.
Anyway, as I stated in the other forum's thread, it seems to be down to you (or the original shop) having done something wrong IMO (or you have a base engine issue). I still think checking the o-ring on the bottom of the HPOP is the next step.
Also, when you report ICP pressure, always report volts too. We need to see if the reading is real or if it is a value assumed by the PCM.
Background:
Anyway, as I stated in the other forum's thread, it seems to be down to you (or the original shop) having done something wrong IMO (or you have a base engine issue). I still think checking the o-ring on the bottom of the HPOP is the next step.
Also, when you report ICP pressure, always report volts too. We need to see if the reading is real or if it is a value assumed by the PCM.
Background:
I just replaced the hpop and it has a threaded plug instead of ball like the one that was on it. It's a later 04 that has the early style round pump but icp sensor in the valve cover. I found some silicone in the oil cooler from the shop that built it they had used silicone one the oil filter housing base and got carried away with it and the excess made it's way into the cooler so I just replaced it with a OEM one hoping that would fix my problem after not finding anything anywhere else. At an idle the ipr is 48% and the high pressure is 1690.
I'm pretty sure I used the yellow o ring under it (the HPOP install). I'm using a mechanical gauge in the oil pressure switch port near the oil filter. Didnt have time to work on it today I will air test it tomorrow. Yea the silicone was definitely either a problem or about to be one but I still have something not right. Leaning towards high pressure side. Ipr was 48% and icp 1690 at an idle which is high.
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