Figure this one out !
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Freshman User
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Figure this one out !
Ok, when i get in the truck after it sits for two days or more the routine is this : the truck will start and run for about 5 secs and kills. turn ignition off wait for glow plugs and she fires up and runs for about 2 secs and kills. Third time she starts and runs rough, give it a good rev or two and white/ blue smoke comes out the pipe and roughness smoothes out. If i run the truck everyday it does not do this, only when i let it sit for 2 to 3 days or more without starting it. I have installed all new motorcraft glow plugs and same thing. New glow plug relay. New fuel filter. new exhaust backpressure sensor. afe filter kit. new oil change. All of the glow plug wires are connected and whatever else needs to be double checked has unfortunately been quadruple checked. " I hate taking them d--m valve covers off " ! What could it be ?
1995 ford f350 crew 4x4 powerstroke 173k miles
Thanks,
Miller502 from Louisiana Geaux Tigers !!!!
1995 ford f350 crew 4x4 powerstroke 173k miles
Thanks,
Miller502 from Louisiana Geaux Tigers !!!!
Senior User
Joined: Jun 2006
Posts: 154
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From: Mount Juliet, TN
I know there are far more knowledgwable here than me, but my guess is this sounds like a fuel pump/pressure problem. After starting a few times and running the pressure builds up enough to sustain delivery, but after a few days bleeds down.
I am sure the PST gods here will offer more insight.
I am sure the PST gods here will offer more insight.
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
HPOP reservoir oil level. Sounds like you res is draining down. After it sit a day or so, pull the plug on top of the HPOP res it should be a 1/4 square you can use a 1/4 ratchet on or an allen head plug. The oil should be about a 1/2 inch from the top or higher. Hope that helps.
Post Fiend
Joined: Apr 2004
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From: Silver Lake Dunes, MI
first check is the reservior that RubberDuck said. also just for the fun of it plug the block heater in and try it. i am wondering if it not the cool weather romps. the cold oil doesn't flow well. What are the temps when you start it? shouldn't be very cold anymore.
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
well thats plenty warm. probably not cold weather romps! but plug it in and give it a try anyway.
as far as drian back the 95's have a check valve in the HPOP. I don't know how it works or where it is but I suppose it could be leaking. a new HPOP would probably be the answer. Or I wonder if bad inejctor o-rings could cause draining? I am think out loud so feel free to comment. if its the hpop then I think the best thing to do would be to find a 17*superduty pump and just do the drain back mod on that. the 96 and later PSD have a anti-drain back mechanism in the timing cover. so drain back is an issue if you put a superduty pump on a 95 or earlier timing cover. there is a fix for that which might even work with your current pump if thats the issue.
as far as drian back the 95's have a check valve in the HPOP. I don't know how it works or where it is but I suppose it could be leaking. a new HPOP would probably be the answer. Or I wonder if bad inejctor o-rings could cause draining? I am think out loud so feel free to comment. if its the hpop then I think the best thing to do would be to find a 17*superduty pump and just do the drain back mod on that. the 96 and later PSD have a anti-drain back mechanism in the timing cover. so drain back is an issue if you put a superduty pump on a 95 or earlier timing cover. there is a fix for that which might even work with your current pump if thats the issue.
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Freshman User
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Oh, if the hpop is not full , do i add motor oil to it? I use the rotella. Does the hpop suck oil from the engine or is it a self contained unit that operates off of its own reservoir? Thanks.
Last edited by miller502; Apr 23, 2007 at 12:07 PM.
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Posting Guru
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From: AZ
It uses the motors oil. I believe the low pressure oil pump fills the resivor and the hpop pressurises the injectors. Something like that.
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Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
correct. just fill the reservior with what ever motor oil you are using. the lube oil pump fills the reservior and then the HPOP pressurizes it for the injectors, injectors use it and spit it back into the valve cover then drains to the pan and around again.
Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
Likes: 1
From: Southwest Georgia
The HPOP resevoir is filled by the engine oil pump (the same oil). Then the HPOP system has it's own pump to pressurize it. Here:
Low-Pressure Oil Flow 7.3L
[img]9497faq/maint/96fman/images/a24962a.gif[/img]
High-Pressure Oil Flow — 7.3L
[img]9497faq/maint/96fman/images/a24961b.gif[/img]
Low-Pressure Oil Flow 7.3L
[img]9497faq/maint/96fman/images/a24962a.gif[/img]
High-Pressure Oil Flow — 7.3L
[img]9497faq/maint/96fman/images/a24961b.gif[/img]
Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
Likes: 1
From: Southwest Georgia
tj, your just too dang fast for me. I think I'm going to have to drive up there and hit your typing hand with a hammer to slow you down. LOL
Last edited by plowhand; Apr 23, 2007 at 12:20 PM. Reason: spelling
Thread Starter
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Freshman User
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I filled the hpop to about 1/4 of the way to the top. It was real low. If it leaks down again is there anyway to stop it from leaking down. The truck started right away with no problems with the oil level about full. I will let it sit for a couple of days and see how it goes.
Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
Here's your check valve, the HPOP needs to be removed;
Click Here for more info. You will need to join the forum in this link to see the other pictures. This link show how to use a newer HPOP in an older system. Good picts.
Click Here for more info. You will need to join the forum in this link to see the other pictures. This link show how to use a newer HPOP in an older system. Good picts.
Last edited by Cuda_jim; Apr 24, 2007 at 07:52 AM.
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
Jim you are the man with the pics! I need to start making some of those to post too! Rep points for you!
Edit: I guess I need to spread the love before I can give you any more! I will be back!
Edit: I guess I need to spread the love before I can give you any more! I will be back!