6.0 hard start after engine dies

[rochettejessy]

Ok what is ur icp when cranking?

[rochettejessy]

And by that i mean when it does not want to start and you are cranking what is your icp at?

[ragnarbronco]

dont know. it doenst want to replicate it now that i have something to monitor it with. tomorrow should be better. i'm thinking its a HPOil leak but because it's 12 degrees outside right now the engine/oil cools fast enough to make it not happen. tomorrow will be warmer during the day and i can play with it more.
only question is where is it leaking from.....dummy plug o ring, stand pipe o ring, in the injector? given that it does start and this is an intermittent thing i think i can almost rule out a bad HPOP but atmospheric conditions can and do affect metal and rubber and stuff....shrinking, expanding, etc.

[dustmanion]

If you icp pressure when cranking hot aka(at a time it won't start) is :

~300-350psi most likely a dummy plug o ring (if you replace them start with the passenger side its the most problematic)
<50psi or there abouts most likely sct fitting

Source- a good friend who is a mechanic and just fixed mine last week with the same exact problem(mine was passenger side dummy plug o ring)

I tried the sct fitting first and didn't fix mine

My cranking icp pressure was usually ~330psi

[ragnarbronco]

nice. thanks. now the upgrades....are they something you buy one at a time or as a set? how long of a process is it to replace the dummy plug o rings and upper stand pipe o rings? anything else that should be replaced while i'm in there?

[rochettejessy]

Well if ur pulling both valve covers, the turbo, and the pump, i would say every oil ring you find, all the injector oilrings... And if you know how, since you have the turbo out i would pop the exaust side open, clean it and soke all the veins and and area in wd 40... But thats just me

[rochettejessy]

Oh wait a sec... Turbos are not serviceable.. (Just kidding)

[ragnarbronco]

i'm not gonna pull the pump. i'm planning on pulling the turbo and valve covers. my understanding is the lower stand pipe o rings dont go to often so for me, it wouldn't be worth the extra work. the o rings in the upper stand pipes and a dummy plugs are what goes. am i correct so far? so me as a pretty good gas engine mechanic and new to diesels i think thats as far as i'll go this time around. question, how do i know if i have a bad injector? or, as i'm assuming (like a bad injector in a gas engine) would that have different symptoms all together (i.e. starts but runs rough, lacks power, etc)? so assuming the injectors are good and i want to replace to major problem orings on both sides, i'm looking for 2 for each dummy plug, 2 for the upper stand pipe...any others? i want to make a shopping list for when i go to ford.

[rochettejessy]

If your scantool really supports ford, the 6.0 is really good at giving you a code for wich injector is bad... Well i should say wich cylinder is not contributing

[sinner6.0L]

yeah that's why I asked what year you had and if the ICP was on the valvecover. So it's definitely an 04 with a wavy rail, unfortunately that doesn't help much more at this point, it could be damn near anything including the high pressure pump. The 04s don't have common spots I go hunting for like 05+

If the standpipes are original it could be a leak there but the square drive dummy plugs on 04s don't leak. I guess the next step is to actually verify it is a leak