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No Low Pressure Oil Pressure
2005 F350 XL SuperDuty 6.0L Turbo Diesel
Truck came in on the hook with a no start condition.
Had very low ICP(Approx. 1500-2000kPa/217-290PSI) and then after a while of cranking had none. Bench tested the IPR and replaced the screen and o-ring. Checked the oil filter and noticed no oil in the housing. Pushed down the black valve and had someone crank it and got no oil. Pulled the oil pressure sensor and hooked up a gauge and it barely came off 0 when cranking. Checked the LPOP and the gerotors were within clearance tolerance. Only thing I found odd was play between the inner gerotor and crank. Used a tube and dum-dum to try and pump some oil from the oil pickup cavity in the LPOP and got nothing but air when pumping slowly and very aerated oil pumping fast. Pulled the pan and checked the oil pickup. The pickup was fully intact. The problem was the o-ring was only being half squished letting air in. Upon further examination, I noticed that the inset ring housing the o-ring on the bedpan was not flat, but angled on a slant.
Now to the questions I have.
First question: Is the inner gerotor to crank supposed to have play? I can turn it approx. 3-5 degrees back and forth.
Second Question: When the oil pickup is fully tightened down, only half of the o-ring is being squished. Has anyone ever seen the bedpan o-ring inset angled?
Thanks in advance for any help you can provide.
Last edited by Rehs; 11-09-2012 at 07:30 AM.