Oil Pressure?
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New User
Joined: Dec 2009
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Oil Pressure?
Need Help.
I have a 05 f-350 with 6.0 and Just had oil cooler & egr cooler installed and now when idling theres no oil pressure but when you are driving it will register oil pressure? any suggestions.
Thanks in advance
I have a 05 f-350 with 6.0 and Just had oil cooler & egr cooler installed and now when idling theres no oil pressure but when you are driving it will register oil pressure? any suggestions.
Thanks in advance
Elder User
Joined: Feb 2009
Posts: 649
Likes: 2
From: PA
Pull your oil filter, at the bottom of the filter housing there will be a small black plastic valve that opens when you loosen the filter cap to drain the oil into the oil pan. Check and see if you might have lost it during your tear down.
Also if you used a filter that was not Racor or Motorcraft it may not be making enough contact to close it.
The thing is that the motor will pump enough oil to supply the engine and HPOP sump at idle, but it will fail to build the 7 PSI pressure needed to budge the needle because it can openly flow back into the oil pan, but at higher RPMs the pump pushes more oil than can flow through that opening and it ends up building pressure.
Edit: here is a picture with the filter housing taken off, on the right edge of the picture you can see the button valve that controls oil being drained back into the oil pan. When it is fully depressed no oil can drain back into the pan.
Also if you used a filter that was not Racor or Motorcraft it may not be making enough contact to close it.
The thing is that the motor will pump enough oil to supply the engine and HPOP sump at idle, but it will fail to build the 7 PSI pressure needed to budge the needle because it can openly flow back into the oil pan, but at higher RPMs the pump pushes more oil than can flow through that opening and it ends up building pressure.
Edit: here is a picture with the filter housing taken off, on the right edge of the picture you can see the button valve that controls oil being drained back into the oil pan. When it is fully depressed no oil can drain back into the pan.
Freshman User
Joined: Mar 2011
Posts: 38
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From: Pearland TX
The drain valve is located @ the 2 o'clock position looking down into the oil filter housing from the front of the truck. It looks like a black push button from the top. If you pulled it out it would look like a black rubber button with three little plastic prongs coming down on the bottom (holds drain valve in the drain hole and are prone to breaking) and a spring around it.
Follow the link from FourWheeler Mag article "FORD POWER STROKE BULLETPROOFING TACTICS" for an image of the drain valve (right side of image).
http://image.fourwheeler.com/f/34181...r_felt_pad.jpg
Also, check the sensor and electrical connection to rule that out.
Edit: hubler13f - Published the pic before I could hit the post button.
Follow the link from FourWheeler Mag article "FORD POWER STROKE BULLETPROOFING TACTICS" for an image of the drain valve (right side of image).
http://image.fourwheeler.com/f/34181...r_felt_pad.jpg
Also, check the sensor and electrical connection to rule that out.
Edit: hubler13f - Published the pic before I could hit the post button.
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New User
Joined: Dec 2009
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Thanks for all your help ended up being a bad connection.
I ended up doing this project in front of my fifth wheel at a RV park in Salisbury,MD. It took me 9 1/2hrs while watching the race. I didn't want to pull it back to Fl with a bad oil cooler.
Thanks again
Robert
I ended up doing this project in front of my fifth wheel at a RV park in Salisbury,MD. It took me 9 1/2hrs while watching the race. I didn't want to pull it back to Fl with a bad oil cooler.
Thanks again
Robert
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