94 PowerStroke wont start
 

Hello all you smart ford guys i really need some help here. I just got this first gen powerstroke and it wont start, it will run on ether, i have checked for fuel at the heads and also oil from the HPOP and have both but haven't put guages on them to check pressures. truck sat for a year and did run before sitting, i have filled the HPOP resevoir and cranked on it for quite some time, please give me some ideas to check out before i take this old beast to the shop. my 92 IDI is so much easier to work on.

Did you check all the fuses (in cab and engine compartment) and relays?

mr.oceandiesel
 

yes i did check every fuse on the truck,,dash and hood. All Were good..and just because i forgot to put it out there i have fuel in both tanks..

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hey guys i found a Tech that will come out to my place tomorrow to scan my truck do any of you have any questions i should ask this guy?..was told that possible problem was o-ring on injector leaking and not allowing pressure to build on HPOP side. what say the smarts...

LOL, have you gotten a scan yet? Ether is bad when the engine has glowplugs.

omg i didnt know ether was bad or glow plugs.. wont do it again.. scan in pm on friday. will stand down till then.....

Once scanned, if there are any codes https://www.dieselbombers.com/ford-p...ble-codes.html it'll help on the next direction, that's if the tech doesn't know when he sees them and get you going.

Maybe check generator, batteries. Mine went out yesterday. It was a first...truck was running and just died.

ok i got the scan and was told oil pressure was bleeding off to fast, so i pulled the valve cover on the pass side and turned engine over and did not get any oil coming out of the injector tube, actually didnt get any off the push tubes eather which i find weird, anyhow im thinking i've got an O-ring job on my hands, i changed the oil and i looked thinned with diesel but fuel filter was clean not green or black, is there any thing else i should be looking for here

What were the Oil pressure numbers?

the oil pressure numbers as i remember them were 2497psi and 2503psi and would hold pressure for about 3 seconds after cranking then went to 0.. i watched this 3 times myself. is that psi up to snuf with a correct working hpop?

That happened to mine. First time it was a fuse. Second time the oil pressure regulator had melted so. And i would check the crankshaft sensor if all else fails.

ok i will check the crankshaft sensor, will update results on tuesday.

Camshaft sensor.... CPS (Camshaft positioning sensor)

And yes, I believe your truck should have started with those pressure numbers.

ok i just put a new cps from the ford house on the truck and nothing... still wont start so im going to pull the drivers side valve cover and check for oil passing the injectors, can't be to many things left to change or check or is there...

The truck cranks but wont fire? Does smoke come out the tailpipe when you crank? You said it started on Ether, does it stay running with ether or immediately die? How are the batteries? Can you check your HPOP Res and stick a straw or something in there to see how far down the oil is?

thats correct it will turn over but wont start. will die right away after eather shot and the hpop resevior is full. both batteries are pretty new and on a charger.

If you open the Fuel filter housing in the middle of the valley, is it full of fuel?

yes, i have taken the fuel filter cap off a couple of times just to check the fuel level and its good and full, even went so far as to turn truck over and verify that fuel is coming in to the bowl.

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I need to know if there is a way to check if oil is getting to the injector, like can i pull the injector and turn the engine over and look to see oil in the opening or something.

Your oil in the case is full correct?

Have you tried unplugging the ICP sensor and trying to start it?

Is there anybody near you willing to let you try a known good IDM?

yes the oil in the truck is at the correct level, hpop is full, i just put a new icp sensor on the truck and i've just tried to start it unpluged and nothing.. Note..i can hear the injectors opening after a few seconds which i feel is a good sign because that means the hpop is building pressure, checked for smoke at the stack while turning engine over, no smoke... just loosened fuel line going to pass side head and got fuel, is there some way the injectors are not getting the fuel to them? could an o-ring fail and cause this problem...i havent noticed any change in the oil level since ive changed it..

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as far as the IDM goes i dont really think i can get one short of buying one off the web. If it has failed would the injectors still open..

Your IDM is fine..

What rpms are you seeing on the tach?

You only need 500psi oil pressure to start...

You also need fuel pressure. Which if you have fuel getting to the head, I would think its alright...

You are getting a WTS light correct?

tach shows about 100 rpm when turning over engine. i moves a bit and isnt steady at a hundred. WTS light works and i can hear the clicks from solenoid.

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there is a sensor on the hpop res that i found thats broken, its located towards the bottom in front of the fuel bowl, not sure what it does, i took it out and it looks like a temp sensor for the oil in the res, could this somehow impede the starting of the engine.

Is it big and black? Towards the drivers side bottom of the HPOP? That is your EOT sensor. I doubt it would cause a no start though. As soon as its unplugged, It should default to a set parameter.

i found a diagram on the web showing the route of fuel and i am wondering if the pressure regulator on the fuel side could be keeping fuel from moving around..

I thought there was fuel getting to the head?
I think I would start working towards finding out if there is HPO getting to the head...

i agree, im starting to think the injection pressure regulator is to blame. the tech that checked out my truck said pressure was building but dropping off to fast after cranking so maybe the ipr is sticking open. might just put a new hpop on even though its expensive..

I would pull the IPR first... Might be orings?

can you give me some pointers on how to remove the ipr, does it have to come out with the HPOP. I was also told by a friend that i should pull the injectors and turn the engine over to check if oil and fuel is coming into the hole where inj would be. Im thinking i read somewhere i need to pull the oil plugs from back of the head if so where are they and can i get to them and is it going to hurt the chamber to have oil and fuel sitting there for a couple of hrs, i really dont want to make my problems worse but really do want to get to the bottom of this.

I think this should help you out for the IPR.

As far as removing the injectors and turning it over, I'm not sure that I would do that. I can only imagine that being a serious mess...

I did that once back in 2006, parked in a friend's driveway, before installing new injectors. Let's just say that his wife is still FURIOUS :bat: about the fuel and oil that ended up on her new car and the house. :s: Not recommended :td:

[QUOTE=cableneff;718799]yes the oil in the truck is at the correct level, hpop is full, i just put a new icp sensor on the truck and i've just tried to start it unpluged and nothing.. Note..i can hear the injectors opening after a few seconds which i feel is a good sign because that means the hpop is building pressure, checked for smoke at the stack while turning engine over, no smoke... just loosened fuel line going to pass side head and got fuel, is there some way the injectors are not getting the fuel to them? could an o-ring fail and cause this problem...i havent noticed any change in the oil level since ive changed it..
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I am confused about how you "hear the injectors opening"... I didn't know you could do that. Since I started following this thread I have had the nagging feeling that it is the valve covers/harnesses.

Twin Boys what i mean is i hear a electric click on each cylinder when turning it over and i now believe is the electric silenoid.

Still thinking valve cover harnesses. Mine would pass a buzz test, but the connections were not good enough to properly operate the injectors and gave the same no start condition. This is a common problem.

twinboys, is it possible that both gaskets failed at the same time, i believe changing the gaskets would be a better option first than the HPOP, i will be home on monday and will put a new set on and let you guys know, my fingers are crossed, hate to throw money at a blind problem but as you said it is a common problem, and its happened to several of my friends.. thanks for the post

I'm not sure this is the problem, I'm just throwin' it out there. It could be the external harness, it could be the gasket, or it could be the internal harness. I could be completely wrong. I was in the same spot and decided to replace it all for completeness and peace of mind.

OK GUYS I GOT THE TRUCK RUNNING, TURNS OUT IT WAS THE HPOP, I FOUND ONE AT A LOCAL WRECKING YARD AND ALSO DID AN O-RING JOB ON THE INJECTORS, ONLY TOOK A FEW TURNS AND IT BUSTED OFF, THANKS FOR ALL THE GREAT INPUT..

I'm also experiencing this same issue?
Thanks for all the great info as well, Do you know if it was your HPOP, or O rings that were the culprit?