After my truck warms up, I can not accelerate without the oil pressure dropping.
This is a '93 Factory Turbo motor. I thought maybe the turn was going bad because it whistles loud, and the pressure went down as boost went up.
Today it was much worse so I decided to park it...
At idle the gauge says it has pressure. I noticed when I took of the oil fill cap that it was making a scraping noise. I shut it down and then stuck my finger in there. It was dry with some vaporized oil coating stuff.
The only work done recently was an oil change, and I used a powerstroke filter and Delo 400 (15-40 I think).
I was thinking it could be the oil pump dieing, but am not sure.
Any ideas?
Are you looking at the factory gauge? It is nothing but an idiot light wired to look like an actual gauge. Changes in voltage, resistance at the sending unit etc will change the gauge reading. Plumb in a mechanical gauge before making any conclusions regarding oil pressure.
Noise with the cap off is normal, what you are hearing is the IP gears.
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1985 International rollback, 6.9L 5 speed "Li'l Big Truck"
Do not take the "idiot" guage as gospel. Just for fun I put a T where my mechanical guage and "factory" sender is located. From idle to 2000 rpm my mechanical goes from 20 - 50 psi, the factory guage goes from the middle DOWN to the L. Put in a mechanical before you drive your self crazy.
There is an electrical connection is it secure on the sender, a loose connection will cause your problem......
Does the engine rattle like it would with bad lifters......if not then things may be ok. Who did the oil change..... double check the oil level Hot and cold....... take the hot reading as gospel.
__________________ http://photos.thedieselstop.com/show...0/ppuser/28329
93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93 has 160K+, it's basically a stock truck with all the Ford options, just no disc player.
Toys: 26'Jayco FK TT, 18'Sylvan Pro Fish.
My oil guage gets crazy sometimes too. I get that same scraping noise when my cap is off. General consensus around here is factory gauges are crap and sounds like yours aint so good either.
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96 f350 crew cab with 175,000 miles and auto tranny. Tymar intake, 4 inch exaust, DP Tuner, and gauges on the pillar.
we run the same kinda oil in our equipment and i have seen it do some crazy things sometimes like it will become really thin like water and sometimes it would burn off really quick.it can be strange but make sure it hasnt happend to you.
The mechanical gauges shows up to 45 psi when I am accelerating, lower than 10 when idling.
That seems kind of low. Do I need to bleed the air from the feed line on the mechanical gauge?
<font color="red">EDIT: During coffee this morning at the shop I brought up your problem of no oil pressure/flow at the sender hole. Mike the Ford tech suggested putting air in the sender hole to see if it clears it. He thinks it may be plugged..... </font>
__________________ http://photos.thedieselstop.com/show...0/ppuser/28329
93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93 has 160K+, it's basically a stock truck with all the Ford options, just no disc player.
Toys: 26'Jayco FK TT, 18'Sylvan Pro Fish.
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