Ok, well to start I own a 1997 F350 dually with 199,000 rounds on it. This truck has run beutifully untill about a month ago. I had a couple guys that work for me top my tanks off from an extra tank I had in the box. Well they didn't pay much attention to what they pumped into my tanks because it turned out to be more water and **** that diesel. With the combination of the miles and this **** hitting my injectors, it need a nice new set of 8. I got the truck back and the restored power was amazing. it ran better than it ever had ( and it ran great before). I put about 100 miles on it the first day back, ran beautiful. It had a slight late start condition when I first got it, which I understand is normanl at first with new injectors. That faded fast as it was supposed to. Now comes the second day. I hooked on to a trailer ( about 5,000 lb) to deliver product 4 hours away. I got about 60 miles into the trip and the engine heated up ( high side of normal) pulling a hill. Something that it has never done. The most it has come up with loads 4 times that size has been 1 letter in the word normal. Typically raises from the " o " to the " r ". I pulled off and idled the truck to bring her back to normal operating conditions and got it to take about 1/2 gal of anti-freeze. I got back on the highway and proceded on. The temp continued to run well above where it has ever run and having the hood open it was legitamatly warmer than normal, not just a guage problem. Down the road the "check engine" light came on and I pulled off, it died at the stop sign. Turned over wonderfully but would not light. My mechanic got the injectors from a company sepcializing in fuel injection that just happened to be in the town I broke down near. They had to tow me in and they checked the injectors for a bad o-ring, no problems. Changed the ICP and it tried to fire. We buttoned everything up and I had to pump the pedal but got it to come to life. It ran wonderfull, they ran many tests, the only codes coming up pointing to ICP/ IPR. After the engine was warm it was shut off and again would not light. Since then thry have changed the IPR, (they also changed the CPS in the beginning as well). Fuel pressure runs within specification at the fuel bowl so it has lead us all to believe that fuel isn't the problem, it's just not getting to the injectors.

They have tested my new oil (200 miles on the change) and say there are air bubles in the oil, that they claim are BEFORE the HPOP ( so it isn't puting the air in there) and that the air is coming from a cracked pick-up tube or too much wear in the bearings. ( both requiring major additional work)

Has anyone seen a problem like this? I can kinda understand the pick up tube as a possibility, but how coule one second the wear be 100 % fine... and now It won't run bast a good warm-up?
ANY IDEAS WILL BE GREATYL APPRECIATED!! sorry for the long post, but details tell the story...
Thanks
Wes

 

Is the oil you put in correctly rated for the PSD. I think the correct rating is CG-4. If not it will foam badly.
Other than that I would hazard a guess that the oil pickup is clogged. Have to remove the engine and oil pan to access.

 

Well the oil is another story. The engine has had Mobil 1 15W50 synthetic since I have owned it. The oil in it is Rotella 10W40, ( meets specs) due to availability at the time the injectors were put in. My plan was to run that oil for the 3 days following untill I had time to change it with Mobil 1.

I find it odd to have that happen all of a sudden as the oil is changed regularly. *shrugs* stranger things have happend though. Any other thoughts anyone?

 

Ok here's a thought. How about a coincidental fan clutch failure which would have nothing to do with the work that was just done. If the engine really is heating up like that you should hear your fan lock up and howl while pulling that hill.

 

Mobil 1 is not rated for Power Stroke motors, it does not have the antifoaming agents required.

Mobil Delvac 1 is the oil that you should be running in a Power Stroke.

 

interesting... that was never a problem before... I would go to AMSOIL before Delvac though... thats back to conventional....


Ok I did some reading ALL night last night.... damn i AM TIRED... But what I was able to come up with is along the lines I expected. It's the HPOP, or maybe foaming oil, or worse case there is a pick-up tube issue. The tech books tell to overfill 3 quarts and raise the rear wheels 10" to test for the pickup tube... if thats the problem it will stop airating the oil then. If that's it anyone know of any way to repair the pickup tube without lifting the engine?

 

Mobil Delvac 1 is a full synthetic oil that has the anti foaming addatives in it that the Power Stroke engine require.
Same as Mobil 1 plus anti foaming.

Mobil 1 is fine for the IDI diesels that do not use the high pressure oil to fire the injectors.

Mobil Delvac 1300 is the petroleum based oil that is also excellent for diesel use.

I have a friend that works for a large fleet operation. They use Amsoil in their vehicles.
Mobil 1 and Amsoil are almost identical oils as far as technical specs go.
This is straight from Amsoils test reports, although that data is a couple of years old.

 

Ok well here's a wrap-up to this one. I researched different problems other have had and it seemed most logical that the HPOP was the part failing. The bearing idea never made sence to me. So Tuesday I called the repair shop and told them to replace that spendy little item. PRESTO, one awesome Powerstroke back to life.
They were confused because they found bubles in the HPOP resivour, which they assumed the bubbles had to come from somewhere before the HPOP. The only mistake being that they neglected to "think outside the box". The thought of the oil CIRCULATORY system as a continues loop hadn't occured to them. Simply put the airation was from the HPOP itself, circling back to itself.

Judging by the sound, and imaculate condition internally for it's mileage, it appears this is yet another 7.3, with proper maintanance, on it's way to a 500,000 + career!

 

Glad to hear it!