Compression Ignition Addict
Join Date: Mar 2012
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Fresh rebuild, no base oil pressure 2006 F350 6.0l
I have been fighting this issue for quite a few months. I even got a replacement engine that I thought would work, but turns out after I installed it, I found out it has a bad lifter on #8 so it is going to have to come out again.
I have a freshly rebuilt motor, but the person that rebuilt it didn't know what they were doing. I have been fighting with if for nearly a year now. It runs, and with the scanner I can see that there is good high pressure oil pressure. When I use a gauge on the low pressure side (not the one in the dash, but a real gauge), it shows very low (4-6psi) at idle, and about 17 psi when you bring it to 2000 RPM.
I replaced the oil pump, re-did the gaskets on the front cover, and replaced all gaskets on the oil cooler housing/filter housing and it has not changed at all. I can put my thumb on the top of the block where the oil comes from the geroter pump through the block and cannot keep it on there due to the pressure, but at the gauge I am still at very low pressure.
I am getting ready to tear down the entire block, any thoughts to what this could be? Missing piston oilers, bearing tolerances not right, galley plugs missing, something else???