2006 powerstroke 6.0 issues. help!

nitrouspete

nitrouspete

Forum Member
im gonna give the cliff note version here. i'd fill an entire page with the story. haha ( i have a buddy who works at a diesel shop in the area that mainly deals with power strokes and even he is having issues with this one.)

2006 F350 6.0 diesel.

Drove all over the other day. got to lansing and shut the truck off. came out 10 mins later, truck would not start. after 45 minutes of sitting we had a long cranka nd she fired up. no smoke, no misses.

while driving home, the truck started shaking and died. would not restart. we had it towed.

after checking things out and getting the truck restarted at home (ton of white smoke, fuel poring from the exhaust), we came to the conclusion number 8 injector was gone via the snap on scanner we had hooked up. we pulled it. The copper base gasket of the bottom of the injector was gone and one of the o rings was blown out.

after replacing the copper gasket and o rings, the truck would fire up and have no smoke and run just like it should, but as soon as it was warm, it would not restart until it was cold. I was advised that the rest of the orings mostlikly need to be changed as this will cause this issue.

We changed all copper gaskets and orings on the injectors.

got the truck started after this operation, no smoke, running on all 8, idling good for 20 minutes.

drove 1/4 mile with it and it was shifting weird and running funny then boom, shuts off, wont restart.

now its acting like its hydrolocked and we begun pulling glow plugs last night to get her unhydrolocked but only got 6 of the 8 out last night.

More work to come today.

any ideas?


FICM voltage is great 48.5, icp is working well and even tried to leave it unplugged but is .25 while idling, had the battery's and alt. tested last night and all passed, hooked up some makeshift grounds thinking its possible i have a faulty ground, still no good, we have great oil pressure (1025 while cranking), fuel is coming to the filter at the top of the engine. We also did an air leak down test of the high pressure side and heard zero leaks (shop air of 100 PSI only and with the engine cold), turbo spins free and has zero play. half tank of fuel with diesel 911 in it.


any help would be appreciated, its kicking my ass.

i agree its possible i have a cranked injector but why would it run great with no smoke at idle?



If any one knows their powerstrokes here and lives near the downriver area, i'll pay for your time to come help diagnose this thing tonight. Beer and booze in a warm shop will be provided. haha
 
I don't know shit about diesels but it seems to me that something is fucked up and the computer isn't letting it start. Maybe loss of oil pressure?
Maybe loss of compression when hot (as mentioned, head or head gasket), which sounds more likely because you loaded up the cylinder (at least one) that pressure has to go somewhere. :dontknow:
 
i would agree with the head gasket thing cuz i know these are known for it, but why would it start up and run great until i shut it off then not restart.

No loss of coolant or anything.
 
I do know that the HPOPs were causing no-start when hot due to a loss of oil pressure. It would crank and never build enough oil pressure to properly deliver fuel. I cant remember the specifics but I think they would pass the air tests and throw off the person troubleshooting. I havent read up on them in a couple years tho.

Do you have diesel in the coolant? I know there were a couple threads I read about where there was no loss of coolant but the coolant would leak-back into the cyl and diesel would end up in the expansion tanks.
 
mustangmike6996 said:
I do know that the HPOPs were causing no-start when hot due to a loss of oil pressure. It would crank and never build enough oil pressure to properly deliver fuel. I cant remember the specifics but I think they would pass the air tests and throw off the person troubleshooting. I havent read up on them in a couple years tho.

Do you have diesel in the coolant? I know there were a couple threads I read about where there was no loss of coolant but the coolant would leak-back into the cyl and diesel would end up in the expansion tanks.
Click to expand...


The scanner shows oil pressure while cranking so that's why im thrown off. no diesel in coolant that i can tell. if there is its not large enough for me to tell.
 
nitrouspete said:
The scanner shows oil pressure while cranking so that's why im thrown off. no diesel in coolant that i can tell. if there is its not large enough for me to tell.
Click to expand...

It isnt something that can be monitored via scan tool its got to have a special leak test performed on the HPOP itself. The pressure will internally bleed out for the most part. IIRC its a drawn out procedure. Myabe youtube Ford Senior Master Technician for Powerstrokes. He has some GREAT tutorials
 
mustangmike6996 said:
It isnt something that can be monitored via scan tool its got to have a special leak test performed on the HPOP itself. The pressure will internally bleed out for the most part. IIRC its a drawn out procedure. Myabe youtube Ford Senior Master Technician for Powerstrokes. He has some GREAT tutorials
Click to expand...


thanks mike, ill check it out. Thats interesting.
 
nitrouspete said:
The scanner shows oil pressure while cranking so that's why im thrown off. no diesel in coolant that i can tell. if there is its not large enough for me to tell.
Click to expand...


How much oil pressure, Pretty sure its 500psi on the high side before it fires the injectors, They are notorious for breaking the HPOP outlet fitting, there is a TSB and an updated part for this to correct it. Also the HPO Manifolds that mount over the top of the injectors have plugs in them and they are known for blowing those o-rings which would cause a large leak and make for low HPOP pressure. With it starting when its cold, seems like its pushed the o-rings out and makes enough pressure to fire the injectors until the oil gets warm and thins out.
 
igotaneed4speed said:
How much oil pressure, Pretty sure its 500psi on the high side before it fires the injectors, They are notorious for breaking the HPOP outlet fitting, there is a TSB and an updated part for this to correct it. Also the HPO Manifolds that mount over the top of the injectors have plugs in them and they are known for blowing those o-rings which would cause a large leak and make for low HPOP pressure. With it starting when its cold, seems like its pushed the o-rings out and makes enough pressure to fire the injectors until the oil gets warm and thins out.
Click to expand...

seeing 1025 psi while cranking.

seeing 625 psi while idling, and alot of pressure when you get in it.


to mike above- im not sure at the moment when i get home, ill see whats up and comment back, if i get her to fire up.
 
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