help please, stuck on side of road!!

[ju015dd]

Truck fired up this am got 150 feet from home and lost oil pressure. Will idle but wont move to get me out ot the darn ditch I had to roll in to get out of road.

[BigEZ]

I'm a newbie, and this is going to sound stupid, but is there oil under the truck? Did you lose your oil cooler by any chance? Obviously if you don't have oil pressure the truck isn't going anywhere.

[Dave]

Pull the dipstick. Is there oil in it

[ju015dd]

sorry, been at work all day. Truck has oil in it. From what I have had the chance to look at so far the hpop is almost empty. What feeds oil to hpop resivoir?

[NoRalPh]

Your LPOP (Low Pres Oil Pump), the "engine oil pump", is what feeds the HPOP res.

So, if you loose engine oil pres the engine can't run and do damage to itself.

You gotta find out why your engine oil pres is low......

[ju015dd]

wow, I just filled the hpop res up, tried to fire the truck up and nothing. checked the res again after turning the truck over a few times and was half empty. Is there any other thing to look at other than the lpop. Only reason I ask is because it is new with only 5k on it.

[ju015dd]

I have been doing some reading and seems there is a check valve or something that might could be stuck open letting the oil go straight back to pan as lpop is pushing it in. Could this be a possibility? If so where exactly is this check valve?

[NoRalPh]

Yes, but, I don't see that as being your problem....

If that check fails what happens is, as the truck sits for days the res drains down and you get long cranking times to start because it has to refill.

You're going in the wrong direction here, you HAVE to get your LPOP to produce oil pres. It can keep-up with the drain-back if that was the problem.

You say the motor has only 5K on it since a rebuild? I'm thinking THAT'S the problem. Did you do it? If not, get it towed to whoever did because if it's something like the oil pump failed, or the pick-up cracked of fell off, this is a MAJOR job to fix.

By the book, the motor has to come out to remove the pan and get in there to fix it.

[Dave]

Check the feed line for the HPOP. I bet you have a busted o ring

[ju015dd]

Originally Posted by NoRalPh

Yes, but, I don't see that as being your problem....


You're going in the wrong direction here, you HAVE to get your LPOP to produce oil pres. It can keep-up with the drain-back if that was the problem.

You say the motor has only 5K on it since a rebuild? I'm thinking THAT'S the problem. Did you do it? If not, get it towed to whoever did because if it's something like the oil pump failed, or the pick-up cracked of fell off, this is a MAJOR job to fix.

By the book, the motor has to come out to remove the pan and get in there to fix it.

Ok, motor was rebuilt 5k back by a guy who has been doing powerstrokes only for many years and a diesel mechanic for over 35 plus years. I trust his work , maybe he got a lpop that just failed on me. This just sucks all around due to how far away from me his shoe is, 6 hours....

On a side note, I have been messing with it tonight doing some test. I unplugged the injector/gp valve cover plugs on both sides. Pulled the plug on res and had about half way from the day before. Put the plug in and jumped the solinoid on fenderwheel with a screwdriver. I then pulled the plug and saw that the oil level had gone down. I then jumped the relay with the plug removed and checked again to see all the oil had drained. I also heard a sucking sound like water going down a drain for a sec as the last of the oil in the res was used up. I was under the impression that with the injector connectors unplugged that the hpop wouldn't pull oil from the hpop? Am I dead wrong and or being told wrong? Builder just keeps saying he doesn't see how it could be the lpop, he has never seen one just up and go bad over night. He was talking about the ipr might could be stuck open, is this even possible?