Fresh rebuild, no base oil pressure 2006 F350 6.0l - Page 2 - Ford Powerstroke Diesel Forum
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post #11 of 21 Old 10-02-2019, 04:24 PM
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lets go back to the beginning, you said good HP oil pressure. so what was it. did you have over 500 at crank? if you can still drive it you should be able to max the HP pressure which should be 3600+. So if you have this much pressure while at the same time low LP oil pressure, then I don't think it makes much sense you have a massive hp leak. so air checking the hp system might not be a bad idea, but with a massive HP leak you shouldn't get 3600+, I think. I suspect that the leak, if it is a "leak" is something else. How bad of a rebuilt was it? bad enough to screw up the crank and rod bearing clearances or forgot to install piston squirter nozzles or cam bearings ? At some point you could pull the pan and start looking around starting with the oil pickup, o-ring out of place, leak or plugged? But before you go to the nasty stuff underneath, you could swap the oil filter base with the other motor, I am sure there is a way to troubleshoot the valving in the filter housing but I'm not up on that.
ps. you could do you "finger" check at the oil pressure port, the turbo feed may not have full flow, but surely the flow would not be restricted at the oil pressure port.

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post #12 of 21 Old 10-02-2019, 05:45 PM
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The only thing in the filter base that "loses" oil is the filter drain valve -- the other valves only bypass

Yeah, I am with the previous post ...time to pull the motor apart and check all the internals
time spent testing and searching ...could have already had the motor apart

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post #13 of 21 Old 10-02-2019, 07:11 PM Thread Starter
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Motor is out, going to try to take it apart in the next couple weekends. I was getting up to 3500psi for hpo, and had 700 when it started. Just as an example of how the motor was rebuilt, the rear lifter retainers were bolted down like the fronts. Which for the rears is kind of a problem as the branch tube is supposed to be bolted down through the lifter retainers. It was just sitting loose on top. Had to take apart the top of the motor to fix. Now will have to take apart the bottom. My bet is either piston oiler not installed or missing galley plug.
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post #14 of 21 Old 10-04-2019, 01:37 PM
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Originally Posted by 97PSD7.3L View Post
Motor is out, going to try to take it apart in the next couple weekends. I was getting up to 3500psi for hpo, and had 700 when it started. Just as an example of how the motor was rebuilt, the rear lifter retainers were bolted down like the fronts. Which for the rears is kind of a problem as the branch tube is supposed to be bolted down through the lifter retainers. It was just sitting loose on top. Had to take apart the top of the motor to fix. Now will have to take apart the bottom. My bet is either piston oiler not installed or missing galley plug.
wow... How did the stand pipes even install properly?! Sorry for the aggrevation, personally I'd take it down to nothing, even plastigauge the bearings. Rebuilder seems unreliable.

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post #15 of 21 Old 10-05-2019, 04:46 AM Thread Starter
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I think that is exactly what I'm going to do
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post #16 of 21 Old 10-27-2019, 08:42 AM Thread Starter
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Well I pulled the oil pan off and found this. The tard left off the oil nozzles!!
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post #17 of 21 Old 10-27-2019, 02:34 PM
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Well -- that will certainly lose a lot of low oil pressure straight back to the crankcase

Hope you go over the whole job to see if anything else is loose/missing

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post #18 of 21 Old 10-27-2019, 03:43 PM
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Unbelievable...


Sent from my iPhone using Tapatalk

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post #19 of 21 Old 10-27-2019, 04:24 PM
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nice persistence and thanks for sharing

6.0 flush pdf
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post #20 of 21 Old 10-28-2019, 04:28 PM Thread Starter
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Absolutely, the guy had the hpo system messed up as well, the branch tube wasnt bolted down the lifter retainers in the back were bolted down and the branch tube was just sitting on top
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