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I'm a new owner of a 2002 f250 7.3L zf650.
This is my first diesel truck and I'm super stoked!
I've already done some work on is as well. injector o-rings, injector cups, ICP replaced, fuel filter, and some other things.
BUT I have a few things that are concerning me.
#1. I bought the truck from a used truck dealership in Bend Organ, they didn't mention doing service on the engine. I noticed it had fresh oil in it which was nice because I had an 840mi drive back home (LA). its been a little over 2 weeks now and the oil is still gold? I thought diesel oil was supposed to be BLACK? I think I'm going to change it anyway but id love to hear what might be going on.
#2. ICP had oil in the connection, replaced with aftermarket ICP, (not OEM). drove it for a while with no issue. now I'm getting an engine light with a P1280 code. the wires coming off the connection look good and I've traced them back some and it looks good. I have an OEM ICP and IPR coming in a few days. if this doesn't fix the issue what is next!?
It will get darker after about 5-6k. That doesn’t mean it’s bad at that point though. I run 10k intervals no problem and have run up to 15k out on the open road and the oil test still came back good. I use good stuff though...T6, Delvac 1 or Schaefer 9000 are the oils I have tried so far and it seems to run fine on any of them. Schaefer is probably my favorite but it’s tough to find locally.
Recommend you start logging some data with Forscan and OBDII dongle on this new-to-you truck, to get an idea of the health of the drivetrain.
Log at least the parameters listed in the 1st two charts. We will be posting an improved graphing tool for Forscan that will help better see how the truck is performing shortly.
Good instructions for using Forscan in the tech folder at the top of the forum.
These trucks do NOT like aftermarket sensors! They may work for awhile but will cause you more headaches than they save you in money.
‘Start with swapping to OEM and go from there.
I am really impressed with the Donaldson DBL4705. My oil has like 3K miles and its still very clean looking. Does the reg size donaldson filter better than the motorcraft one? Reason I ask is I noticed the sway bar has kissed the DBL7405 at some point offroad.
...People ask me why I don’t pre-fill the oil filter. I say ‘have you ever seen how much oil the LPOP moves?????’
Just leave the filter off and crank the engine over a few revolutions and you can see first hand!!!
Good to know about not needing to pre-fill the oil filter. I have yet to change the oil on this new-to-me truck, and I had assumed it was best practice to pre-fill.
Good to know about not needing to pre-fill the oil filter. I have yet to change the oil on this new-to-me truck, and I had assumed it was best practice to pre-fill.
Same here I always thought that was the way to do it.
The Power Stroke 7.3 Liter Diesel engine lubrication system is comprised of a low-pressure system and a high-pressure system. The low-pressure system provides primary engine lubrication while the high-pressure system provides the hydraulic pressure required to actuate the fuel injectors.
The low-pressure lubricating system draws oil from the engine oil pan through the oil pump screen cover and tube into the oil inlet passage in the front cover. The gerotor oil pump then pumps the oil back out through the outlet passage in the front cover.
The oil separates into two paths.
One flow path sends oil into the high-pressure pump reservoir initial fill gallery (integral to the cylinder block) and through the anti-drainback check ball. During cold start the oil feeds in two directions from the anti-drainback check ball. One feed leaves the check ball and enters the front cover. From there it enters the high-pressure oil reservoir. The second feed exits the check ball and enters the left bank valve lifter oil gallery.
After leaving the front cover outlet passage, the second oil path sends the oil through the oil cooler and filter assembly. Once inside the filter housing, the oil filter bypass valve may open to vent excess pressure and oil back into the oil pan. After the oil has been circulated through the oil filter, the oil feed then enters the main oil gallery (integral to the cylinder block). Once in the main oil gallery, the oil is routed to the five crankshaft main bearings through five drilled and machined feed galleries (integral to the cylinder block). The five camshaft bearings receive the oil feed through five vertically drilled and machined feed galleries connected to the main bearing feed galleries. The front main bearing feed gallery also supplies oil to the right bank valve lifter oil gallery through a vertically drilled and machined oil feed gallery (integral to the cylinder block). The rear main bearing oil feed gallery also supplies oil to the turbocharger assembly through a vertically drilled and machined oil feed gallery (integral to the cylinder block).
Pressurized oil entering the turbocharger assembly is utilized to lubricate the compressor/turbine shaft. The oil drains back through the turbocharger mounting pedestal and back into the oil pan. The valve lifter oil gallery supplies pressurized oil to the valve tappets and to the piston cooling oil jets. Oil from the valve tappets is routed upward to the cylinder head valve train through hollow push rods. Once in the cylinder head, the oil drains back to the oil pan through return ports at each end of the cylinder head.
Just FYI, the FSM says this about the pressure from the LPOP in pin point test AO4. I posted this recently in the thread linked below for an FTE that thought they had an oil pressure problem, but I don't think they did...
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Oil not turning black!? and P1280
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The Power Stroke 7.3 Liter Diesel engine lubrication system is comprised of a low-pressure system and a high-pressure system. The low-pressure system provides primary engine lubrication while the high-pressure system provides the hydraulic pressure required to actuate the fuel injectors.
