Glad you made it home without any more problems. Did you check your oil again? If it is low, I would think that it is going through the turbo seal.

 

Here is a direct link to the map >> https://www.google.com/maps/d/edit?m...Q.knVowsrkSusg
But you can find the map thread here >> https://www.ford-trucks.com/forums/1...forum-map.html

Tom the set PSI for that useless gauge is 7 PSI.



Sean

6.0L Tech Folder

 

Just to add a little more detail on the oil pressure:

The oil pressure switch activates at 5 psig.

The oil pressure switch engages at 5-7 psi to move the dash indicator to the mid zone.
Anything less than that will just show no oil pressure.

12 psi at 700 rpm is minimum recommended (24 psi at 1200 rpm and 45 psi at 1800).

 

So the gauge is not analog? Strange. It was at 2/3 and now resides at 1/2 scale.

 

Yes, I checked it again and I will watch it. I had an exhaust side seal go on a remanufactured turbo with less than 1,000 miles on it. Not pretty, but if I had the same leak on the intake side the engine would have become a bomb. Oil is fuel. I was at Sturgis and I coated a thousand MC's with oil and killed all the mosquitos in SD.

I have thought about a small intake side leak as that would be the only way for two gallons of oil to disappear in just a few thousand miles without residue or oil stain somewhere including the exhaust pipe. I will watch it close and I will check before I start it this morning.

Which brings up the fact that hot there is no oil on the stick and cold it shows at the top of the full mark.

 

Does a SCII have a true oil pressure gauge?

 

No, because there's not a true low oil pressure sender.

With this motor, if the low pressure pump isn't pumping the motor won't run because the high pressure pump (that also gets it's oil from that pump and supplies oil to fire the injectors) won't have any oil to fire the injectors.

 

How long are you waiting after shutdown to check the oil? Perhaps you're not giving enough time to let all the oil drain back from the top of the engine?


Per the oil change procedure in the Tech section "Oil can stay in the upper portions of the engine for up to 20 minutes after the engine is shutdown."


Maybe wait 20-min and then check?

 

Howdy,

It's also possible that you may have some strange electrical "things" going on due to poor grounds, poor connections, and/or RF! (if you're generating a LOT of RF)

When I had a much older F-250, and when running 600w on 75 and 40, it did all sorts of things to the gages and other electrical "stuff' in the truck. (luckily I had mechanical injection and a manual trans)

I can only surmise what would happen to the ECM and FICM, transmission control, and other "things" in the presence of high power RF either in a near field or in the electrical system.............

73/Rick

 

Would the oil draining from the upper cause the gauge to come up after the truck starts as well? Or should that gauge move as soon as the motor turns over?

 

It would add some delay to the gauge. Ever watch it
after an oil change? Not all that instant is it.



Sean

6.0L Tech Folder

 

It always takes my gauge "a bit" before it comes up after the motor starts. And I can hear the turbo vanes move at the same time.

 

Gauge comes right up, but it used to go to 2/3 before the repairs and goes to 1/2 now. Not to worry if it is just a switched gauge. Now if the signal comes from or through the FICM, that would explain the change with the new FICM.

 

It does not.

 

Oil level is fine at this time waiting 1 hour to check it.